Results 1 to 10 of about 90,434 (188)

Contramodules [PDF]

, 2019
Contramodules are module-like algebraic structures endowed with infinite summation (or, occasionally, integration) operations satisfying natural axioms. Introduced originally by Eilenberg and Moore in 1965 in the case of coalgebras over commutative rings,
Positselski, Leonid
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Fraisse Limits, Ramsey Theory, and Topological Dynamics of Automorphism Groups [PDF]

, 2004
We study in this paper some connections between the Fraisse theory of amalgamation classes and ultrahomogeneous structures, Ramsey theory, and topological dynamics of automorphism groups of countable structures.Comment: 73 pages, LaTeX 2e, to appear in ...
Kechris, A. S., Pestov, V. G., Todorcevic, S.   +2 more
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Spin, statistics, orientations, unitarity

, 2016
A topological quantum field theory is Hermitian if it is both oriented and complex-valued, and orientation-reversal agrees with complex-conjugation. A field theory satisfies spin-statistics if it is both spin and super, and $360^\circ$-rotation of the ...
Johnson-Freyd, Theo
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Modal Logics of Topological Relations [PDF]

, 2006
Logical formalisms for reasoning about relations between spatial regions play a fundamental role in geographical information systems, spatial and constraint databases, and spatial reasoning in AI.
A. Artale and E. Franconi, A. G. Cohn and S. Hazarika, B. Bennett, B. Bennett, B. Clarke, B. Nebel and H. Bürckert, C. Lutz, C.H. Papadimitriou, D. Suciu, and V. Via, Carsten Lutz, D. Harel, F. Wolter, Frank Wolter, G. Gargov and V.Goranko, I. Düntsch, H. Wang, and S. McCloskey, I. Pratt and D. Schoop, I. Pratt-Hartmann, I. Shapirovsky and V. Shehtman, J. Burgess, J. F. Allen, J. G. Stell, J. Mc Kinsey and A. Tarski, J. Renz, J. Renz and B. Nebel, J.Y. Halpern and Y. Shoham, K. Etessami, M. Y. Vardi, and T. Wilke, M. de Rijke, M. Egenhofer, M. Egenhofer and R. Franzosa, M. Marx and M. Reynolds, M. Reynolds and M. Zakharyaschev, R. Maddux, V. Goranko and D. Vakarelov, V. Goranko and S. Passy, Y. Venema, Yde Venema   +34 more
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Branes as Stable Holomorphic Line Bundles On the Non-Commutative Torus [PDF]

, 2004
It was recently suggested by A. Kapustin that turning on a $B$-field, and allowing some discrepancy between the left and and right-moving complex structures, must induce an identification of B-branes with holomorphic line bundles on a non-commutative ...
A. Kapustin, D.J. Gross, L. Cornalba, M. Gualtieri, M. Marino, N. Hitchin, N. Seiberg, Pascal Grange, R.C. Myers, S. Mukhi, S. Mukhi, S. Mukhi, S.R. Das, S.R. Das, T. Mehen, V. Schomerus   +15 more
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Beyond Topologies, Part I [PDF]

, 2010
Arguments on the need, and usefulness, of going beyond the usual Hausdorff-Kuratowski-Bourbaki, or in short, HKB concept of topology are presented. The motivation comes, among others, from well known {\it topological type processes}, or in short TTP-s ...
Rosinger, Elemer E, van der Walt, Jan Harm   +1 more
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Overview of (pro-)Lie group structures on Hopf algebra character groups

, 2017
Character groups of Hopf algebras appear in a variety of mathematical and physical contexts. To name just a few, they arise in non-commutative geometry, renormalisation of quantum field theory, and numerical analysis.
A Connes, A Murua, A Murua, A Murua, Andreas Kriegl, C Brouder, Dominique Manchon, E Hairer, Fernando Casas, G Bogfjellmo, G Bogfjellmo, H Alzaareer, H Glöckner, H Glöckner, H Glöckner, H Glöckner, H Yamabe, Hans Heinrich Keller, Helge Glöckner, Helge Glöckner, Helmut H. Schaefer, HZ Munthe-Kaas, HZ Munthe-Kaas, JC Butcher, JC Butcher, JW Milnor, K Ebrahimi-Fard, K Ebrahimi-Fard, K Ebrahimi-Fard, K Floret, K-H Neeb, Karl-Goswin Grosse-Erdmann, KH Hofmann, KH Hofmann, P Chartier, P Chartier, P Chartier, R Arens, R Dahmen, R Dahmen, Richard S. Hamilton, S Majid, W Bertram, Walter Michaelis, WD Suijlekom van, WD Suijlekom van, William C. Waterhouse, WS Gray   +47 more
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Reparametrizations of Continuous Paths [PDF]

, 2006
A reparametrization (of a continuous path) is given by a surjective weakly increasing self-map of the unit interval. We show that the monoid of reparametrizations (with respect to compositions) can be understood via ``stop-maps'' that allow to ...
Fahrenberg, Ulrich, Raussen, Martin
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State sum construction of two-dimensional open-closed Topological Quantum Field Theories

, 2006
We present a state sum construction of two-dimensional extended Topological Quantum Field Theories (TQFTs), so-called open-closed TQFTs, which generalizes the state sum of Fukuma--Hosono--Kawai from triangulations of conventional two-dimensional ...
AARON D. LAUDA, Aguiar M., Borceux F., Fuchs J., HENDRYK PFEIFFER, Kock J., MacLane S., Ranicki A. A.   +7 more
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A Prehistory of n-Categorical Physics

, 2008
This paper traces the growing role of categories and n-categories in physics, starting with groups and their role in relativity, and leading up to more sophisticated concepts which manifest themselves in Feynman diagrams, spin networks, string theory ...
Baez, John C., Lauda, Aaron
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