Academic literature on the topic 'Invariant properties'

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Journal articles on the topic "Invariant properties"

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Führ, Hartmut, and Jun Xian. "Quantifying invariance properties of shift-invariant spaces." Applied and Computational Harmonic Analysis 36, no. 3 (2014): 514–21. http://dx.doi.org/10.1016/j.acha.2013.08.002.

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Lai, Yi Qiang. "Rotation Moment Invariant Feature Extraction Techniques for Image Matching." Applied Mechanics and Materials 721 (December 2014): 775–78. http://dx.doi.org/10.4028/www.scientific.net/amm.721.775.

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In recently years, extracting images invariance features are gaining more attention in image matching field. Various types of methods have been used to match image successfully in a number of applications. But in mostly literatures, the rotation moment invariant properties of these invariants have not been studied widely. In this paper, we present a novel method based on Polar Harmonic Transforms (PHTs) which is consisted of a set of orthogonal projection bases to extract rotation moment invariant features. The experimental results show that the kernel computation of PHTs is simple and image f
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ADAMS, COLIN, RACHEL HUDSON, RALPH MORRISON, et al. "The spiral index of knots." Mathematical Proceedings of the Cambridge Philosophical Society 149, no. 2 (2010): 297–315. http://dx.doi.org/10.1017/s0305004110000241.

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AbstractIn this paper, we introduce two new invariants that are closely related to Milnor's curvature-torsion invariant. The first, a particularly natural invariant called the spiral index of a knot, captures the number of local maxima in a knot projection that is free of inflection points. This invariant is sandwiched between the bridge and braid index of a knot, and captures more subtle properties. The second invariant, the projective superbridge index, provides a method of counting the greatest number of local maxima that occur in a given projection. In addition to investigating the relatio
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Hertling, Peter, and Yongge Wang. "Invariance Properties of Random Sequences." JUCS - Journal of Universal Computer Science 3, no. (11) (1997): 1241–49. https://doi.org/10.3217/jucs-003-11-1241.

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We present invariance characterizations of different types of random sequences. We correct Schnorr's original, incorrect characterization of Martin-Loef ran dom sequences, compare it with Schnorr s corresponding characterization of his own randomness concept, and give a similar, new characterization of Kurtz random sequences. That is, we show that an infinite sequence is Kurtz random if and only if for every partial, computable, measure-invariant function the sequence is not recursive. 1.) Proceedings of the First Japan-New Zealand Workshop on Logic in Computer Science, special issue editors D
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Ohtsuki, Tomotada, and Shuji Yamada. "Quantum SU(3) Invariant of 3-Manifolds via Linear Skein Theory." Journal of Knot Theory and Its Ramifications 06, no. 03 (1997): 373–404. http://dx.doi.org/10.1142/s021821659700025x.

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The linear skein theory for the Kauffman bracket was introduced by Lickorish [11,12]. It gives an elementary construction of quantum SU(2) invariant of 3-manifolds. In this paper we prove basic properties of the linear skein theory for quantum SU(3) invariant. By using them we give an elementary construction of quantum SU(3) invariant of 3-manifolds and prove topological invariance of the invariant along the construction.
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MOHAPATRA, MANAS RANJAN, and SWADESH KUMAR SAHOO. "MAPPING PROPERTIES OF A SCALE INVARIANT CASSINIAN METRIC AND A GROMOV HYPERBOLIC METRIC." Bulletin of the Australian Mathematical Society 97, no. 1 (2017): 141–52. http://dx.doi.org/10.1017/s0004972717000570.

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We consider a scale invariant Cassinian metric and a Gromov hyperbolic metric. We discuss a distortion property of the scale invariant Cassinian metric under Möbius maps of a punctured ball onto another punctured ball. We obtain a modulus of continuity of the identity map from a domain equipped with the scale invariant Cassinian metric (or the Gromov hyperbolic metric) onto the same domain equipped with the Euclidean metric. Finally, we establish the quasi-invariance properties of both metrics under quasiconformal maps.
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Körding, Konrad P., and Peter König. "Neurons with Two Sites of Synaptic Integration Learn Invariant Representations." Neural Computation 13, no. 12 (2001): 2823–49. http://dx.doi.org/10.1162/089976601317098547.

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Neurons in mammalian cerebral cortex combine specific responses with respect to some stimulus features with invariant responses to other stimulus features. For example, in primary visual cortex, complex cells code for orientation of a contour but ignore its position to a certain degree. In higher areas, such as the inferotemporal cortex, translation-invariant, rotation-invariant, and even view point-invariant responses can be observed. Such properties are of obvious interest to artificial systems performing tasks like pattern recognition. It remains to be resolved how such response properties
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Cavallo, Alberto, and Carlo Collari. "Slice-torus Concordance Invariants and Whitehead Doubles of Links." Canadian Journal of Mathematics 72, no. 6 (2019): 1423–62. http://dx.doi.org/10.4153/s0008414x19000294.

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AbstractIn this paper we extend the definition of slice-torus invariant to links. We prove a few properties of the newly-defined slice-torus link invariants: the behaviour under crossing change, a slice genus bound, an obstruction to strong sliceness, and a combinatorial bound. Furthermore, we provide an application to the computation of the splitting number. Finally, we use the slice-torus link invariants and the Whitehead doubling to define new strong concordance invariants for links, which are proven to be independent of the corresponding slice-torus link invariant.
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Clark, W. Edwin, and Masahico Saito. "Algebraic properties of quandle extensions and values of cocycle knot invariants." Journal of Knot Theory and Its Ramifications 25, no. 14 (2016): 1650080. http://dx.doi.org/10.1142/s0218216516500802.

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Quandle 2-cocycles define invariants of classical and virtual knots, and extensions of quandles. We show that the quandle 2-cocycle invariant with respect to a non-trivial [Formula: see text]-cocycle is constant, or takes some other restricted form, for classical knots when the corresponding extensions satisfy certain algebraic conditions. In particular, if an abelian extension is a conjugation quandle, then the corresponding cocycle invariant is constant. Specific examples are presented from the list of connected quandles of order less than 48. Relations among various quandle epimorphisms inv
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SATO, CHIFUMI. "PERTURBATIVE INVARIANTS OF LENS SPACES ASSOCIATED WITH COHOMOLOGY CLASSES." Journal of Knot Theory and Its Ramifications 15, no. 07 (2006): 913–29. http://dx.doi.org/10.1142/s0218216506004786.

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The quantum SO(3)-invariants of ℚ-homology 3-spheres can be perturbatively expanded to the Ohtsuki invariant in number theory. On the other hand, it is known that the quantum SU(2)-invariants of 3-manifolds M admits a refinement involving a mod 2 cohomology class of M. A motivation of this paper is to study whether a perturbative expansion can be derived from the refinement. In this paper, we shall prove to be able to derive the perturbative expansion in the case of lens spaces by a concrete calculation, and shall define the perturbative invariant. Furthermore we obtain some properties for the
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Dissertations / Theses on the topic "Invariant properties"

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Bhattacharyya, Arnab. "Testability of linear-invariant properties." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68435.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 75-80).<br>Property Testing is the study of super-efficient algorithms that solve "approximate decision problems" with high probability. More precisely, given a property P, a testing algorithm for P is a randomized algorithm that makes a small number of queries into its input and distinguishes between whether the input satisfies P or whether the input is "far" from satisfying P, where "farness" of
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Raimbault, Nathaniel. "Gauge-invariant magnetic properties from the current." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30179/document.

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De nombreux phénomènes physiques ne peuvent être compris qu'en s'intéressant à la structure électronique. Cette dernière peut être interprétée en termes de propriétés électromagnétiques, chacune de ces propriétés révélant diverses informations sur le système étudié. Il est donc important d'avoir des outils efficaces afin de calculer de telles propriétés. C'est dans ce contexte que cette thèse a été écrite, notre principal objectif ayant été de développer une méthode générale donnant accès à une vaste gamme de propriétés électromagnétiques. Dans la première partie de cette thèse, nous décrivons
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Hussain, Fawad. "Homological properties of invariant rings of finite groups." Thesis, University of Glasgow, 2011. http://theses.gla.ac.uk/3539/.

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Let $V$ be a non-zero finite dimensional vector space over the finite field $F_q$. We take the left action of $G \le GL(V)$ on $V$ and this induces a right action of $G$ on the dual of $V$ which can be extended to the symmetric algebra $F_q[V]$ by ring automorphisms. In this thesis we find the explicit generators and relations among these generators for the ring of invariants $F_q[V] G$. The main body of the research is in chapters 4, 5 and 6. In chapter 4, we consider three subgroups of the general linear group which preserve singular alternating, singular hermitian and singular quadratic for
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Guo, Alan Xinyu. "Some closure features of locally testable affine-invariant properties." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79229.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 31-32).<br>We prove that the class of locally testable affine-invariant properties is closed under sums, intersections and "lifts". The sum and intersection are two natural operations on linear spaces of functions, where the sum of two properties is simply their sum as a vector space. The "lift" is a less well-studied property, which creates some interesting affine-invariant properties over large do
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Delafargue, A. (Antoine) 1981. "Material invariant properties of shales : nanoindentation and microporoelastic analysis." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28625.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, February 2005.<br>Includes bibliographical references (p. 228-236).<br>Shales compose the major part of sedimentary rocks and cover most of hydrocarbon bearing reservoirs. Shale materials are probably one of the most complex natural composites, and their mechanical properties are still an enigma that has deceived many decoding attempts from experimental and theoretical sides. Advanced experimental techniques, such as nanoindentation, and theoretical microporomechanics make it possible today to b
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Ben, Salem Ala Eddine. "Improving the model checking of stutter-invariant LTL properties." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066186/document.

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Les systèmes logiciels sont devenus omniprésents se substituant à l'homme pour des tâches délicates, souvent critiques, mettant en jeu des coûts importants voire des vies humaines. Les conséquences des défaillances imposent la recherche de méthodes rigoureuses pour la validation. L'approche par automates du model-checking est la plus classique des approches de vérification automatique. Elle prend en entrée un modèle du système et une propriété, et permet de savoir si cette dernière est vérifiée. Pour cela un model-checker traduit la négation de la propriété en un automate et vérifie si le prod
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Ben, Salem Ala Eddine. "Improving the model checking of stutter-invariant LTL properties." Electronic Thesis or Diss., Paris 6, 2014. http://www.theses.fr/2014PA066186.

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Les systèmes logiciels sont devenus omniprésents se substituant à l'homme pour des tâches délicates, souvent critiques, mettant en jeu des coûts importants voire des vies humaines. Les conséquences des défaillances imposent la recherche de méthodes rigoureuses pour la validation. L'approche par automates du model-checking est la plus classique des approches de vérification automatique. Elle prend en entrée un modèle du système et une propriété, et permet de savoir si cette dernière est vérifiée. Pour cela un model-checker traduit la négation de la propriété en un automate et vérifie si le prod
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Simmons, Skyler C. "Topological Properties of Invariant Sets for Anosov Maps with Holes." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/3101.

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We begin by studying various topological properties of invariant sets of hyperbolic toral automorphisms in the linear case. Results related to cardinality, local maximality, entropy, and dimension are presented. Where possible, we extend the results to the case of hyperbolic toral automorphisms in higher dimensions, and further to general Anosov maps.
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Julian, Poranee K. "Geometric Properties of the Ferrand Metric." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1353088820.

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Bobko, Christopher Philip 1981. "Material invariant properties and reconstruction of microstructure of sandstones by nanoindentation and microporoelastic analysis." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/31147.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2005.<br>Includes bibliographical references (p. 183-189).<br>The diversity of sandstones and sandstone properties that exist in nature pose a significant problem for engineers who deal with these materials, whether in oil well exploration and exploitation or art and architectural conservation. The solution proposed in this thesis takes a highly reductionist approach to the problem. Properties of the sandstone material are first reduced to material invariant properties of the material phases pre
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Books on the topic "Invariant properties"

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Shu, Lin. On linear structure and phase rotation invariant properties of block 2[superscript l]-PSK modulation codes. National Aeronautics and Space Administration, 1990.

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Hall, Robert Ernest. Invariance properties of Solow's productivity residual. National Bureau of Economic Research, 1989.

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Barʹi͡akhtar, Viktor Grigorʹevich. Theory of adiabatic potential and atomic properties of simple metals. Gordon and Breach Science Publishers, 1999.

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Li, Weiping, and Shihshu Walter Wei. Geometry and topology of submanifolds and currents: 2013 Midwest Geometry Conference, October 19, 2013, Oklahoma State University, Stillwater, Oklahoma : 2012 Midwest Geometry Conference, May 12-13, 2012, University of Oklahoma, Norman, Oklahoma. American Mathematical Society, 2015.

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Koch, Anne. Determining Input-Output Properties of Linear Time-invariant Systems from Data. Logos Verlag Berlin, 2022.

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Sorrentino, Alfonso. Action-Minimizing Invariant Measures for Tonelli Lagrangians. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691164502.003.0003.

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This chapter discusses the notion of action-minimizing measures, recalling the needed measure–theoretical material. In particular, this allows the definition of a first family of invariant sets, the so-called Mather sets. It discusses their main dynamical and symplectic properties, and introduces the minimal average actions, sometimes called Mather's α‎- and β‎-functions. A thorough discussion of their properties (differentiability, strict convexity or lack thereof) is provided and related to the dynamical and structural properties of the Mather sets. The chapter also describes these concepts
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Children's naming of subject categories: Developmental differences in the invariant properties of category labelling. University Microfilms International, 1994.

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Sorrentino, Alfonso. From KAM Theory to Aubry-Mather Theory. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691164502.003.0002.

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This chapter discusses an illustrative example, namely the properties of invariant probability measures and orbits on KAM tori (or more generally, on invariant Lagrangian graphs). This will prepare the ground for understanding the main ideas and techniques that will be developed in the following chapters, without several technicalities that might be confusing to a neophyte.
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Iliopoulos, John. A Problem of Mass. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198805175.003.0004.

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This chapter examines the constraints coming from the symmetry properties of the fundamental interactions on the possible values of the masses of elementary particles. We first establish a relation between the range of an interaction and the mass of the particle which mediates it. This relation implies, in particular, that long-range interactions are mediated by massless particles. Then we argue that gauge invariant interactions are long ranged and, therefore, the associated gauge particles must have zero mass. Second, we look at the properties of the constituents of matter, the quarks and the
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Sorrentino, Alfonso. Action-Minimizing Curves for Tonelli Lagrangians. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691164502.003.0004.

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This chapter discusses the notion of action-minimizing orbits. In particular, it defines the other two families of invariant sets, the so-called Aubry and Mañé sets. It explains their main dynamical and symplectic properties, comparing them with the results obtained in the preceding chapter for the Mather sets. The relation between these new invariant sets and the Mather sets is described. As a by-product, the chapter introduces the Mañé's potential, Peierls' barrier, and Mañé's critical value. It discusses their properties thoroughly. In particular, it highlights how this critical value is re
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Book chapters on the topic "Invariant properties"

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Harima, Tadahito, Toshiaki Maeno, Hideaki Morita, Yasuhide Numata, Akihito Wachi, and Junzo Watanabe. "Invariant Theory and Lefschetz Properties." In The Lefschetz Properties. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38206-2_8.

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Beyer, Dirk, Po-Chun Chien, and Nian-Ze Lee. "Augmenting Interpolation-Based Model Checking with Auxiliary Invariants." In Lecture Notes in Computer Science. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-66149-5_13.

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AbstractSoftware model checking is a challenging problem, and generating relevant invariants is a key factor in proving the safety properties of a program. Program invariants can be obtained by various approaches, including lightweight procedures based on data-flow analysis and intensive techniques using Craig interpolation. Although data-flow analysis runs efficiently, it often produces invariants that are too weak to prove the properties. By contrast, interpolation-based approaches build strong invariants from interpolants, but they might not scale well due to expensive interpolation procedu
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Forrest, Jeffrey Yi-Lin. "Properties Invariant Under Feedback." In General Systems Theory. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-04558-6_10.

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Kim, A. V. "Properties of Functionals. Invariant Derivative." In Functional Differential Equations. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-017-1630-7_2.

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Melo, Welington, and Sebastian Strien. "Ergodic Properties and Invariant Measures." In One-Dimensional Dynamics. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-78043-1_6.

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Nagaev, A. "Asymptotic properties of invariant tests." In Multidimensional Statistical Analysis and Theory of Random Matrices, edited by A. K. Gupta and V. L. Girko. De Gruyter, 1996. http://dx.doi.org/10.1515/9783110916690-016.

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Bhattacharyya, Arnab, and Yuichi Yoshida. "Affine-Invariant Properties of Functions." In Property Testing. Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8622-1_11.

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Sabri, A. "Properties of invariant curves near a known invariant curve." In Lecture Notes in Mathematics. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/bfb0076429.

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Batz, Kevin, Mingshuai Chen, Sebastian Junges, Benjamin Lucien Kaminski, Joost-Pieter Katoen, and Christoph Matheja. "Probabilistic Program Verification via Inductive Synthesis of Inductive Invariants." In Tools and Algorithms for the Construction and Analysis of Systems. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30820-8_25.

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AbstractEssential tasks for the verification of probabilistic programs include bounding expected outcomes and proving termination in finite expected runtime. We contribute a simple yet effective inductive synthesis approach for proving such quantitative reachability properties by generating inductive invariants on source-code level. Our implementation shows promise: It finds invariants for (in)finite-state programs, can beat state-of-the-art probabilistic model checkers, and is competitive with modern tools dedicated to invariant synthesis and expected runtime reasoning.
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Bouchal, Zdenĕk, Jan Peřina, and Richard Horák. "Correlation Properties of Propagation-Invariant Fields." In Coherence and Quantum Optics VII. Springer US, 1996. http://dx.doi.org/10.1007/978-1-4757-9742-8_211.

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Conference papers on the topic "Invariant properties"

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Tidor, Jonathan, and Yufei Zhao. "Testing linear-invariant properties." In 2020 IEEE 61st Annual Symposium on Foundations of Computer Science (FOCS). IEEE, 2020. http://dx.doi.org/10.1109/focs46700.2020.00113.

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Rachev, Alexander, Tarek ElShazly, and David N. Ku. "Constitutive Formulation of the Mechanical Properties of Synthetic Hydrogels." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59795.

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This study attempts to define a universal description of the constitutive formulation of mechanical properties of synthetic hydrogels that can be manufactured as load-bearing structures to replace diseased or damaged soft tissues. While the strain energy density function (SEF) describing the elastic properties of a soft tissue generally depends on two invariants, we propose a SEF that depends on only the first strain invariant. This allows quantifying the SEF from data of a uniaxial extension test. The single invariant SEF was used to predict the mechanical response of a thick-walled tube infl
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Yanzhong Hu and Gang Cheng. "The operations invariant properties on graphs." In 2012 First National Conference for Engineering Sciences (FNCES). IEEE, 2012. http://dx.doi.org/10.1109/nces.2012.6543787.

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Narayana, K. T., and Sanjeev Dharap. "Invariant properties in a dialog system." In Conference proceedings. ACM Press, 1990. http://dx.doi.org/10.1145/99569.99818.

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Zibaeenejad, M. H., and J. G. Thistle. "Weak invariant simulation: Properties and algorithms." In 2013 American Control Conference (ACC). IEEE, 2013. http://dx.doi.org/10.1109/acc.2013.6579952.

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Bhattacharyya, Arnab, Eldar Fischer, and Shachar Lovett. "Testing Low Complexity Affine-Invariant Properties." In Proceedings of the Twenty-Fourth Annual ACM-SIAM Symposium on Discrete Algorithms. Society for Industrial and Applied Mathematics, 2013. http://dx.doi.org/10.1137/1.9781611973105.97.

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Hu, Yanzhong, and Gang Cheng. "The Operations Invariant Properties on Graphs." In 2013 the International Conference on Education Technology and Information Systems (ICETIS 2013). Atlantis Press, 2013. http://dx.doi.org/10.2991/icetis-13.2013.51.

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Sheng, Y., and H. H. Arsenault. "Invariant recognition using circular Fourier radial-mellin descriptors." In OSA Annual Meeting. Optica Publishing Group, 1985. http://dx.doi.org/10.1364/oam.1985.the3.

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An invariant moment method is used to achieve image recognition and classification that is invariant under changes of position, rotation, contrast, and scale. The generalized image descriptors are calculated from circular Fourier radial Mellin transforms, which are radial moments of circular harmonic functions. The radial moments are redundant, and only one or a few orders need be used. The selection of the harmonic order depends on the geometrical properties of the image. The normalization procedure used to obtain scale and contrast invariance yields a weighting effect on the invariant featur
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Shapira, Asaf. "Green's conjecture and testing linear-invariant properties." In the 41st annual ACM symposium. ACM Press, 2009. http://dx.doi.org/10.1145/1536414.1536438.

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Son, Sooel, Seungwon Shin, Vinod Yegneswaran, Phillip Porras, and Guofei Gu. "Model checking invariant security properties in OpenFlow." In ICC 2013 - 2013 IEEE International Conference on Communications. IEEE, 2013. http://dx.doi.org/10.1109/icc.2013.6654813.

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Reports on the topic "Invariant properties"

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Markel, Vadim A., Leonid S. Muratov, Mark I. Stockman, and Thomas F. George. Scale-Invariant Theory of Optical Properties of Fractal Clusters. Defense Technical Information Center, 1990. http://dx.doi.org/10.21236/ada227031.

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Hall, Robert. Invariance Properties of Solow's Productivity Residual. National Bureau of Economic Research, 1989. http://dx.doi.org/10.3386/w3034.

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Hirsch, Colin, and Stephan Tobies. A Tableau Algorithm for the Clique Guarded Fragment. Aachen University of Technology, 1999. http://dx.doi.org/10.25368/2022.106.

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Aus der Einleitung: The Guarded Fragment of first-order logic, introduced by Andréka, van Benthem, and Németi, has been a succesful attempt to transfer many good properties of modal, temporal, and description logics to a larger fragment of predicate logic. Among these are decidability, the finite modal property, invariance under an appropriate variant of bisimulation, and other nice modal theoretic properties.
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Fleischer, Mark, and Sheldon Jacobson. Scale Invariance Properties in the Simulated Annealing Algorithm. Defense Technical Information Center, 2002. http://dx.doi.org/10.21236/ada442644.

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Ziegler, Nancy, Nicholas Webb, Adrian Chappell, and Sandra LeGrand. Scale invariance of albedo-based wind friction velocity. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/40499.

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Obtaining reliable estimates of aerodynamic roughness is necessary to interpret and accurately predict aeolian sediment transport dynamics. However, inherent uncertainties in field measurements and models of surface aerodynamic properties continue to undermine aeolian research, monitoring, and dust modeling. A new relation between aerodynamic shelter and land surface shadow has been established at the wind tunnel scale, enabling the potential for estimates of wind erosion and dust emission to be obtained across scales from albedo data. Here, we compare estimates of wind friction velocity (u*)
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Perdigão, Rui A. P., and Julia Hall. Spatiotemporal Causality and Predictability Beyond Recurrence Collapse in Complex Coevolutionary Systems. Meteoceanics, 2020. http://dx.doi.org/10.46337/201111.

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Causality and Predictability of Complex Systems pose fundamental challenges even under well-defined structural stochastic-dynamic conditions where the laws of motion and system symmetries are known. However, the edifice of complexity can be profoundly transformed by structural-functional coevolution and non-recurrent elusive mechanisms changing the very same invariants of motion that had been taken for granted. This leads to recurrence collapse and memory loss, precluding the ability of traditional stochastic-dynamic and information-theoretic metrics to provide reliable information about the n
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