Výsledky vyhledávání - "Aproximació, Teoria de l'"

Approximation algorithms for two-state anti-ferromagnetic spin systems on bounded degree graphs

Autor: Sinclair, Alistair, Srivastava, Piyush, Thurley, Marc, Universitat Autònoma de Barcelona. Centre de Recerca Matemàtica

Publikováno v: Recercat. Dipósit de la Recerca de Catalunya
instname
Recercat: Dipósit de la Recerca de Catalunya
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Dipòsit Digital de Documents de la UAB
Universitat Autònoma de Barcelona

In a seminal paper [10], Weitz gave a deterministic fully polynomial approximation scheme for counting exponentially weighted independent sets (which is the same as approximating the partition function of the hard-core model from statistical physics)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::85651f438b79cb88e2ffd14ea4988ed6
http://hdl.handle.net/2072/419115

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On the Chebyshev property for a new family of functions

Autor: J. Tomás Lázaro, Joan Torregrosa, Armengol Gasull

Publikováno v: Recercat: Dipósit de la Recerca de Catalunya
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Recercat. Dipósit de la Recerca de Catalunya
instname
Dipòsit Digital de Documents de la UAB
Universitat Autònoma de Barcelona
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

We analyze whether a given set of analytic functions is an Extended Chebyshev system. This family of functions appears studying the number of limit cycles bifurcating from some nonlinear vector field in the plane. Our approach is mainly based on the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d15ab3ed7396c65aaa96bd0a177fb3d
http://hdl.handle.net/2072/410471

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Decomposable approximations of nuclear C*-algebras

Autor: Hirshberg, I., White, Stuart, Kirchberg, E., Universitat Autònoma de Barcelona. Centre de Recerca Matemàtica

We show that nuclear C*-algebras have a re ned version of the completely positive approximation property, in which the maps that approximately factorize through finite dimensional algebras are convex combinations of order zero maps. We use this to sh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::2ad7d2e15d14799df450b674d5317ccc
http://hdl.handle.net/2072/419119

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Embedding theorems of function classes, IV

Autor: Tikhonov, Sergey Yu., Universitat Autònoma de Barcelona. Centre de Recerca Matemàtica

Vegeu el resum a l'inici del document del fitxer adjunt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::f9c5e43fd1b0b191d39bac0e1cab683d
http://hdl.handle.net/2072/418806

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