Relevant bibliographies by topics / Quasi-invariants

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Quasi-invariants'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Quasi-invariants.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Quasi-invariants"

1

Pokhozhaev, Stanislav I. "Riemann quasi-invariants." Sbornik: Mathematics 202, no. 6 (2011): 887–907. http://dx.doi.org/10.1070/sm2011v202n06abeh004170.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Feigin, M. V. "Quasi-Invariants of Dihedral Systems." Mathematical Notes 76, no. 5/6 (2004): 723–37. http://dx.doi.org/10.1023/b:matn.0000049671.38147.7e.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Sauer, R. "Homological Invariants and Quasi-Isometry." GAFA Geometric And Functional Analysis 16, no. 2 (2006): 476–515. http://dx.doi.org/10.1007/s00039-006-0562-y.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Kol'tsov, Nikolay I. "QUASI-INVARIANTS OF CHEMICAL REACTIONS IN DISTRIBUTED SYSTEMS WITH DIFFUSION." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 64, no. 1 (2020): 41–46. http://dx.doi.org/10.6060/ivkkt.20216401.6133.

Full text
Abstract:
For reactions occurring in distributed systems with longitudinal and radial diffusion, the relations between the concentrations of reagents and temperature remaining practically constant in time and space (space-time kinetic quasi-invariants) are found. A method for determining such quasi-invariants for chemical reactions occurring in the mixing reactor taking into account the diffusion of reagents and temperature changes in the longitudinal and radial directions has been developed and tested. The quasi-invariants found relate nonequilibrium concentrations of diffusing reagents and temperature
APA, Harvard, Vancouver, ISO, and other styles
5

Kol'tsov, Nikolay I. "QUASI-INVARIANTS OF CHEMICAL REACTIONS IN DISTRIBUTED SYSTEMS WITH DIFFUSION." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 64, no. 1 (2020): 41–46. http://dx.doi.org/10.6060/ivkkt.20216401.6133.

Full text
Abstract:
For reactions occurring in distributed systems with longitudinal and radial diffusion, the relations between the concentrations of reagents and temperature remaining practically constant in time and space (space-time kinetic quasi-invariants) are found. A method for determining such quasi-invariants for chemical reactions occurring in the mixing reactor taking into account the diffusion of reagents and temperature changes in the longitudinal and radial directions has been developed and tested. The quasi-invariants found relate nonequilibrium concentrations of diffusing reagents and temperature
APA, Harvard, Vancouver, ISO, and other styles
6

INOUE, AYUMU. "QUASI-TRIVIALITY OF QUANDLES FOR LINK-HOMOTOPY." Journal of Knot Theory and Its Ramifications 22, no. 06 (2013): 1350026. http://dx.doi.org/10.1142/s0218216513500260.

Full text
Abstract:
We introduce the notion of quasi-triviality of quandles and define homology of quasi-trivial quandles. Quandle cocycle invariants are invariant under link-homotopy if they are associated with 2-cocycles of quasi-trivial quandles. We thus obtain a lot of numerical link-homotopy invariants.
APA, Harvard, Vancouver, ISO, and other styles
7

Lipman, Joseph. "Topological invariants of quasi-ordinary singularities." Memoirs of the American Mathematical Society 74, no. 388 (1988): 0. http://dx.doi.org/10.1090/memo/0388.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Berest, Yuri, and Oleg Chalykh. "Quasi-invariants of complex reflection groups." Compositio Mathematica 147, no. 3 (2010): 965–1002. http://dx.doi.org/10.1112/s0010437x10005063.

Full text
Abstract:
AbstractWe introduce quasi-invariant polynomials for an arbitrary finite complex reflection group W. Unlike in the Coxeter case, the space of quasi-invariants of a given multiplicity is not, in general, an algebra but a module Qk over the coordinate ring of a (singular) affine variety Xk. We extend the main results of Berest et al. [Cherednik algebras and differential operators on quasi-invariants, Duke Math. J. 118 (2003), 279–337] to this setting: in particular, we show that the variety Xk and the module Qk are Cohen–Macaulay, and the rings of differential operators on Xk and Qk are simple r
APA, Harvard, Vancouver, ISO, and other styles
9

Calderbank, A. R. "Geometric invariants for quasi-symmetric designs." Journal of Combinatorial Theory, Series A 47, no. 1 (1988): 101–10. http://dx.doi.org/10.1016/0097-3165(88)90044-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

DRUŢU, CORNELIA. "QUASI-ISOMETRY INVARIANTS AND ASYMPTOTIC CONES." International Journal of Algebra and Computation 12, no. 01n02 (2002): 99–135. http://dx.doi.org/10.1142/s0218196702000948.

Full text
Abstract:
We present some results about quasi-isometry invariants, particularly emphasizing the relationships between their behavior and properties of asymptotic cones. Our main objects of study are hyperbolic metric spaces, hyperbolic and solvable groups.
APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic "Quasi-invariants"

1

Johnston, David. "Quasi-invariants of hyperplane arrangements." Thesis, University of Glasgow, 2012. http://theses.gla.ac.uk/3169/.

Full text
Abstract:
The ring of quasi-invariants $Q_m$ can be associated with the root system $R$ and multiplicity function $m$. It first appeared in the work of Chalykh and Veselov in the context of quantum Calogero-Moser systems. One can define an analogue $Q_{\mathcal{A}}$ of this ring for a collection $\mathcal{A}$ of vectors with multiplicities. We study the algebraic properties of these rings. For the class of arrangements on the plane with at most one multiplicity greater than one we show that the Gorenstein property for $Q_{\mathcal{A}}$ is equivalent to the existence of the Baker-Akhiezer function, thus
APA, Harvard, Vancouver, ISO, and other styles
2

Drutu, Cornelia. "Réseaux des groupes semisimples et invariants de quasi-isométrie." Paris 11, 1996. http://www.theses.fr/1996PA112179.

Full text
Abstract:
Dans cette these on etudie des groupes de type fini. On s'interesse surtout aux reseaux de q-rang un des groupes de lie semisimples et a leur comportement par rapport aux quasi-isometries. On emploie la methode d'etude introduite par m. Gromou, qui est de regarder la geometrie a grande echelle du graphe de cayley associe au groupe dans une presentation fixee. Une maniere de voir cette geometrie est d'etudier les invariants de quasi-isometrie du graphe de cayley. On utilise un nouvel outil, le cone asymptotique, introduit par m. Gromou, van den dries et wilkie. On demontre que la propriete d'un
APA, Harvard, Vancouver, ISO, and other styles
3

Gutiérrez, i. Serrés Pere. "Estabilitat efectiva i tors invariants de sistemes hamiltonians quasi-integrables." Doctoral thesis, Universitat de Barcelona, 1995. http://hdl.handle.net/10803/2108.

Full text
Abstract:
La memòria recull contribucions a diversos aspectes del problema de l'estabilitat en sistemes hamiltonians quasi-integrables. Aquests aspectes inclouen resultats d'estabilitat efectiva, que comporten el confinament de trajectòries durant un interval de temps molt gran, i també resultats que estableixen l'existència de tors invariants, entre els quals distingim els tors KAM i tors de dimensió inferior.<br/><br/>Considerem un sistema hamiltonià quasi-integrable, amb <i>n</i> graus de llibertat, en el qual la mida de la pertorbació és "Epsilon". Malgrat la possibilitat de difusió en aquest tipus
APA, Harvard, Vancouver, ISO, and other styles
4

Al, Jaabari Mohamed El Mokhtar. "Opérateurs différentiels quasi-invariants et représentation exceptionnelle de SL3(R)." Poitiers, 1993. http://www.theses.fr/1993POIT2273.

Full text
Abstract:
Le revêtement connexe simplement connexe de SL(3,R) admet une représentation unitaire irréductible appelée représentation exceptionnelle, l'analogue des représentations de Weil pour les groupes métaplectiques réels. Nous réalisons cette représentation comme noyau d'un opérateur différentiel invariant étroitement lié à la géométrie de l'orbite coadjointe nilpotente de dimension minimale. Pour décrire et donner une formule explicite de la structure unitaire, nous utilisons l'analyse de Fourier sur le groupe de Heisenberg.
APA, Harvard, Vancouver, ISO, and other styles
5

Chaluleau, Benoît. "Problème du mot, invariants de quasi-isométrie pour les groupes." Toulouse 3, 2003. http://www.theses.fr/2003TOU30036.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Lee, Huaiqian. "Flots quasi-invariants associés aux champs de vecteur non réguliers." Thesis, Dijon, 2011. http://www.theses.fr/2011DIJOS100/document.

Full text
Abstract:
La thèse est composée de deux parties.Dans la première partie, nous allons étudier le flot quasi-invariant défini par une équation différentielle stochastique de Stratanovich avec le dérive ayant seulement la BV-régularitésur un espace euclidien, en généralisant des résultats de L. Ambrosio sur l'existence,unicité et stabilité des flots lagrangiens associés aux équations différentielles ordinaires[Invent. Math. 158 (2004), 227{260]. Comme une application d'un résultat de stabilité,nous allons construire une solution explicite à l'equation de transport stochastique enterme de flot stochastique.
APA, Harvard, Vancouver, ISO, and other styles
7

Luque, Jimenez Alejandro. "Analytic and numerical tools for the study of quasi-periodic motions in hamiltonian systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/6699.

Full text
Abstract:
És un fet ben conegut que les solucions quasi-periòdiques juguen un paper rellevant a l'hora d'entendre la dinàmica de problemes amb formulació hamiltoniana, els quals apareixen en una gran quantitat d'aplicacions en astrodinàmica, dinàmica molecular, física de d'acceleradors/plasmes o mecànica celest.<br/><br/>De forma imprecisa i imcomplerta, hom pot dir que la teoria KAM recull una serie de tècniques i metodologies per estudiar solucions quasi-periòdiques (és a dir, funcions dependents d'un conjunt de freqüències) d'equacions diferencials típicament amb formulació hamiltoniana. Tot i que la
APA, Harvard, Vancouver, ISO, and other styles
8

George, Jennifer Lynn. "TQFTs from Quasi-Hopf Algebras and Group Cocycles." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1369834588.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Pech, Clélia. "Cohomologie quantique des grassmanniennes symplectiques impaires." Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENM059/document.

Full text
Abstract:
Les grassmanniennes symplectiques impaires sont une famille d'espaces quasi-homogènes très proches des grassmanniennes symplectiques de par leur construction et leurs propriétés. Dans ce travail, j'étudie leur cohomologie classique et quantique. Pour les grassmanniennes symplectiques impaires de droites, j'obtiens une règle de Pieri quantique ainsi qu'une présentation de l'anneau de cohomologie quantique. J'en déduis la semi-simplicité de cet anneau et je détermine une collection exceptionnelle complète pour la catégorie dérivée, ce qui me permet de vérifier pour cet exemple une conjecture de
APA, Harvard, Vancouver, ISO, and other styles
10

Truong, Hong Minh. "Formes normales de singularités de feuilletages et invariants de glissement." Toulouse 3, 2013. http://thesesups.ups-tlse.fr/2047/.

Full text
Abstract:
Les objets étudiés dans cette thèse sont les germes de feuilletages holomorphes singuliers dans le plan. Elle est divisée en deux parties: La première partie est consacrée à donner des formes normales formelles de feuilletages topologiquement quasi-homogènes dans des conditions génériques. Toute forme normale est donnée comme la somme de trois termes: un terme générique quasi-homogène initial, un terme hamiltonien et un terme radial. Nous montrons également que le nombre de coefficients libres dans les termes hamiltoniens sont conformes à la dimension de l'espace des modules de Mattei de déplo
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Quasi-invariants"

1

Lipman, Joseph. Topological invariants of quasi-ordinary singularities. American Mathematical Society, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Zeitlin, Vladimir. Vortex Dynamics on the f and beta Plane and Wave Radiation by Vortices. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198804338.003.0006.

Full text
Abstract:
Quasi-geostrophic dynamics being essentially the vortex dynamics, the main notions of vortex dynamics in the plane are introduced in this chapter. Dynamics of vorticity is treated both in Eulerian and Lagrangian descriptions. Dynamics of point vortices and vortex patches (contour dynamics) are recalled, as well as discretisations of the vorticity equation preserving Casimir invariants, which reflect Lagrangian conservation of vorticity. The influence of the beta effect upon vortices is illustrated, and exact modon solutions of the QG equations on the f and beta planes are constructed. Basic no
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Quasi-invariants"

1

Kunz, H. "Topological Invariants Associated with Quasi-Periodic Quantum Hamiltonians." In Springer Proceedings in Physics. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75405-0_15.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Başar, Erol. "Oscillations and Transmitters Are Quasi-invariants in Brain-Body-Mind Integration." In Brain-Body-Mind in the Nebulous Cartesian System: A Holistic Approach by Oscillations. Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-6136-5_22.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Džamonja, Mirna, Sylvain Schmitz, and Philippe Schnoebelen. "On Ordinal Invariants in Well Quasi Orders and Finite Antichain Orders." In Trends in Logic. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-30229-0_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Gros, Patrick. "Using quasi-invariants for automatic model building and object recognition: An overview." In Object Representation in Computer Vision. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/3-540-60477-4_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Albert, Elvira, Samir Genaim, Enrique Martin-Martin, Alicia Merayo, and Albert Rubio. "Lower-Bound Synthesis Using Loop Specialization and Max-SMT." In Computer Aided Verification. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-81688-9_40.

Full text
Abstract:
AbstractThis paper presents a new framework to synthesize lower-bounds on the worst-case cost for non-deterministic integer loops. As in previous approaches, the analysis searches for a metering function that under-approximates the number of loop iterations. The key novelty of our framework is the specialization of loops, which is achieved by restricting their enabled transitions to a subset of the inputs combined with the narrowing of their transition scopes. Specialization allows us to find metering functions for complex loops that could not be handled before or be more precise than previous approaches. Technically, it is performed (1) by using quasi-invariants while searching for the metering function, (2) by strengthening the loop guards, and (3) by narrowing the space of non-deterministic choices. We also propose a Max-SMT encoding that takes advantage of the use of soft constraints to force the solver look for more accurate solutions. We show our accuracy gains on benchmarks extracted from the 2020 Termination and Complexity Competition by comparing our results to those obtained by the "Image missing" system.
APA, Harvard, Vancouver, ISO, and other styles
6

Harper, Katie L., Brenda E. Quinn, Sergey V. Nazarenko, and Miguel D. Bustamante. "Zonostrophy and Other Quadratic Invariants in Drift and Quasi-Geostrophic Wave Turbulence." In Zonal Jets. Cambridge University Press, 2019. http://dx.doi.org/10.1017/9781107358225.023.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Quasi-invariants"

1

van de Weijer, Gevers, and Geusebroek. "Color edge detection by photometric quasi-invariants." In ICCV 2003: 9th International Conference on Computer Vision. IEEE, 2003. http://dx.doi.org/10.1109/iccv.2003.1238670.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Philippe, Franck D., Dominique Clorennec, Maximin Ces, Romain Anankine, and Claire Prada. "Analysis of backward waves and quasi-resonance of shells with the invariants of the time reversal operator." In ICA 2013 Montreal. ASA, 2013. http://dx.doi.org/10.1121/1.4800803.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Quasi-invariants"

1

Binford, Thomas O., and Tsung-Liang Chen. Context and Quasi-Invariants in Automatic Target Recognition (ATR) with Synthetic Aperture Radar (SAR) Imagery. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada400048.

Full text
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography