Relevant bibliographies by topics / Ω-poset

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Ω-poset'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Ω-poset"

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Sharp, James D. "Combinatorics on ideals and axiom A." Journal of Symbolic Logic 59, no. 3 (1994): 997–1000. http://dx.doi.org/10.2307/2275923.

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Throughout this paper denotes a nonprincipal ultrafilter and ℐ denotes the dual ideal. ℙ(ℐ) is the poset of all partial functions p: ω → 2 such that dom(p) ∈ ℐ. In [2], Grigorieff proved that ω1 is preserved in the corresponding generic extension if and only if is a P-point. Later, when Shelah introduced the notion of a proper poset, many people observed that if is a P-point, then ℙ(ℐ) is proper. One way of proving this is to show that player II has a winning strategy in the game for ℙ(ℐ) (see [3, p. 91].)The notion of an Axiom A poset was introduced by Baumgartner [1]. If a poset satisfies Ax
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Steel, J. R. "Core models with more Woodin cardinals." Journal of Symbolic Logic 67, no. 3 (2002): 1197–226. http://dx.doi.org/10.2178/jsl/1190150159.

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In this paper, we shall prove two theorems involving the construction of core models with infinitely many Woodin cardinals. We assume familiarity with [12], which develops core model theory the one Woodin level, and with [10] and [6], which extend the fine structure theory of [5] to mice having many Woodin cardinals. The most important new problem of a general nature which we must face here concerns the iterability of Kc with respect to uncountable iteration trees.Our first result is the following theorem, a slightly stronger version of which was proved independently and earlier by Woodin. The
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Buls, Jānis, та Edmunds Cers. "Modularity in the Semilattice of ω-Words". Journal of Discrete Mathematics 2014 (15 травня 2014): 1–6. http://dx.doi.org/10.1155/2014/891760.

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A partial ordering of ω-words can be introduced with regard to whether an ω-word can be transformed into another by a Mealy machine. It is known that the poset of ω-words that is introduced by this ordering is a join-semilattice. The width of this join-semilattice has the power of continuum while the depth is at least ℵ0. We have created a technique for proving that power-characteristic ω-words are incomparable. We use this technique to show that this join-semilattice is not modular.
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Gitik, Moti. "On changing cofinality of partially ordered sets." Journal of Symbolic Logic 75, no. 2 (2010): 641–60. http://dx.doi.org/10.2178/jsl/1268917497.

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AbstractIt is shown that under GCH every poset preserves its cofinality in any cofinality preserving extension. On the other hand, starting with ω measurable cardinals, a model with a partial ordered set which can change its cofinality in a cofinality preserving extension is constructed.
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David, R. "Some results on higher Suslin trees." Journal of Symbolic Logic 55, no. 2 (1990): 526–36. http://dx.doi.org/10.2307/2274644.

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Higher Suslin trees have become a tool in some forcing constructions in set theory (see, for example, [D1] and [D2]). Most of the constructions using ω1 Suslin trees can be extended to κ+ Suslin trees for any regular cardinal κ. Some of these are given in §1.In many such constructions, sequences of Suslin trees are used. In §II we show, in various ways, that the generalization to sequences, even ω-sequences, of κ+ Suslin trees cannot be done.In these constructions the Suslin trees are used as forcing poset (the forcing adds a branch in the tree). There is another way to kill a Suslin tree, nam
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Kale, K. A. "Monotone Functions from Posets Onto ω". Bulletin of the London Mathematical Society 28, № 1 (1996): 1–3. http://dx.doi.org/10.1112/blms/28.1.1.

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CAGLIARI, F., and S. MANTOVANI. "Exponentiable morphisms of domains." Mathematical Structures in Computer Science 18, no. 5 (2008): 1005–16. http://dx.doi.org/10.1017/s0960129508006786.

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Given a mapfin the category ω-Cpoof ω-complete posets, exponentiability offin ω-Cpoeasily implies exponentiability offin the categoryPosof posets, while the converse is not true. We investigate the extra conditions needed onfexponentiable inPosto be exponentiable in ω-Cpoby showing the existence of partial products of the two-point ordered setS={0<1} (Theorem 2.8). Using this characterisation and the embedding through the Scott topology of ω-Cpoin the categoryTopof topological spaces, we compare exponentiability in each setting and find that a morphism in ω-Cpothat is exponentiable in bothT
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Kesavan, S. "On a comparison theorem via symmetrisation." Proceedings of the Royal Society of Edinburgh: Section A Mathematics 119, no. 1-2 (1991): 159–67. http://dx.doi.org/10.1017/s0308210500028389.

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SynopsisTalenti's theorem allows us to estimate the norms of the solution of an elliptic boundary value problem posed on a bounded open set Ω in terms of those of the “symmetrised” problem posed on Ω*, the ball centred at 0 and such that |Ω| = |Ω*|. We are interested in the limiting case when equality is achieved between the norms of the two solutions. We show then that Ω = Ω* and that the solution is radially symmetric and decreasing. The novelty of this exposition is that the method used is very elementary compared to the usual arguments.
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Kale, Kishor. "Embedding ω-continuous posets in function spaces of domains". Semigroup Forum 49, № 1 (1994): 247–59. http://dx.doi.org/10.1007/bf02573487.

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Feng, Ziqin, та Naga Chandra Padmini Nukala. "Sub-posets in ω and the strong Pytkeev⁎ property". Topology and its Applications 300 (серпень 2021): 107750. http://dx.doi.org/10.1016/j.topol.2021.107750.

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Dissertations / Theses on the topic "Ω-poset"

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Eghosa, Edeghagba Elijah. "Ω-Algebraic Structures". Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104206&source=NDLTD&language=en.

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The research work carried out in this thesis is aimed   at fuzzifying algebraic and relational structures in the framework of Ω-sets, where Ω is a complete lattice.Therefore we attempt to synthesis universal algebra and fuzzy set theory. Our  investigations of Ω-algebraic structures are based on Ω-valued equality, satisability of identities and cut techniques. We introduce Ω-algebras, Ω-valued congruences,  corresponding quotient  Ω-valued-algebras and  Ω-valued homomorphisms and we investigate connections among these notions. We prove that there is an Ω-valued ho
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Almabruk, Bleblou Omalkhear Salem. "Some new lattice valued algebraic structures with comparative analysis of various approaches." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=105400&source=NDLTD&language=en.

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In this work a comparative analysis of several approaches to fuzzy algebraic structures and comparison of previous approaches to the recent one developed at University of  Novi Sad has been done. Special attention is paid to reducts and expansions of algebraic structures in fuzzy settings. Besides mentioning all the relevant algebras and properties developed in this setting, particular new algebras and properties are developed and investigated. Some new structures, in particular Omega Boolean algebras, Omega Boolean lattices and Omega Boolean rings are developed in the framework of omega
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Conference papers on the topic "Ω-poset"

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Kawanishi, Yasutomo, Daisuke Deguchi, Ichiro Ide та Hiroshi Murase. "Ω-GAN: Object Manifold Embedding GAN for Image Generation by Disentangling Parameters into Pose and Shape Manifolds". У 2020 25th International Conference on Pattern Recognition (ICPR). IEEE, 2021. http://dx.doi.org/10.1109/icpr48806.2021.9412393.

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Taylor, Benjamin H., Tausif Jamal, and D. Keith Walters. "Performance Evaluation of a Non-Linear Explicit Algebraic Reynolds Stress Model for Surface Mounted Obstacles." In ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fedsm2020-20304.

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Abstract The presence of complex vortical structures, unsteady wakes, separated shear layers, and streamline curvature pose considerable challenges for traditional linear Eddy-Viscosity (LEV) models. Since Non-Linear Eddy Viscosity Models (NEV) models contain additional strain-rate and vorticity relationships, they can provide a better description for flows with Reynolds stress anisotropy and can be considered to be suitable alternatives to traditional EVMs in some cases. In this study, performance of a Non-Linear Explicit Algebraic Reynolds Stress Model (NEARSM) to accurately resolve flow ove
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Mackowski, Daniel W., and Mario Ramos. "Prediction of the Effective Thermal Diffusivity of Discretely Inhomogeneous Media." In ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/ht2009-88508.

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An extended definition of the effective thermal diffusivity is posed via an analogy to acoustic and EM wave propagation in discretely inhomogeneous media. Specifically, the propagation of a periodic, plane thermal wave of frequency ω, through an inhomogeneous medium consisting of spherical particles embedded in a continuous matrix, is theoretically examined. An exact solution for the time–harmonic conduction equation, for the multiple sphere system, is developed by use of the scalar wave harmonic functions and the addition theorem for the harmonics. An effective medium model, which is based on
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Kin, Warrick D., Sunita Kruger, Nickey Janse van Rensburg, and Leon Pretorius. "Numerical Assessment of the Aerodynamic Properties of a Solar Vehicle." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65760.

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Due to wide emphasis on climate change today, alternative fuel research is necessary. Consequently, the South African Solar Challenge has created a competitive platform for research into alternative energies, particularly solar. The University of Johannesburg (UJ) competed in the competition using their uniquely designed and built solar vehicle, Ilanga I. However, due to the constraints of the energy available, the aerodynamics of the vehicle has to be exceptionally good. Subsequently, a large proportion of the total power of the vehicle is used to overcome the aerodynamic resistance posed by
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Diab, Aya, Moataz Alaa, Ahmed Hossam El-Din, Hassan Salem, and Zakaria Ghoneim. "Performance Degradation of Wind Turbine Airfoils due to Dust Contamination: A Comparative Numerical Study." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-44012.

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Sand accumulation can pose significant problems to wind turbines operating in the dusty Saharan environments of the Middle East and North Africa. Despite its difficulty, sand particles can be to a great extent avoided using sealed power drive trains; however, surface contamination of the blades is certainly unavoidable. As a result, aerodynamic losses and even premature separation can be incurred. To mitigate such advert consequences and avoid significant power losses, the choice of properly designed airfoil sections with low contamination sensitivity is a must. Alternatively, mitigation techn
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