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Institut de mathématiques
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+41 32 718 28 00
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Neuchâtel
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Academic Institute
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Voici les éléments 1 - 10 sur 437
- PublicationAccès libreOn invariant hypersurfaces of strongly monotone maps(1997)For C-k, k>1, strongly monotone discrete-time dynamical systems, we present simple criteria which ensure that nonmonotone invariant manifolds are C-k. (C) 1997 Academic Press.
- PublicationAccès libreSmale Strategies for Network Prisoner's Dilemma Games(2015-03-29T19:10:46Z)
;Kashi Behrstock; Morris W. HirschSmale's approach to the classical two-players repeated Prisoner's Dilemma game is revisited here for N -players and Network games in the framework of Blackwell's approachability, stochastic approximations and differential inclusions. - PublicationMétadonnées seulementOn Lyndon's equation in some Lambda-free groups and HNN extensions(2011-12-2)
; ;Fine, BenjaminRosenberger, Gerhard - PublicationMétadonnées seulementAn application of Ramanujan graphs to C*-algebra tensor productsIn a remarkable recent paper, Junge and Pisier (1995) prove that there are several distinct C*-norms on the tensor product B(H) x B(H), where B(H) is the C*-algebra of bounded linear operators on the usual Hilbert space H. To give a quantitative version of this result, they introduce the function lambda(n) = sup{\\u\\(max)/\\u\\(min): u a tensor with rank at most n in B(H) x B(H)}, and prove cn(1/8) less than or equal to lambda(n) less than or equal to n(1/2) for n > 2. In this note, we use Ramanujan graphs to get 1/2n(1/2) < lambda(n) for any n = q + 1, q a prime power. From this we deduce lim inf/pi-->infinity lambda(n)/root n greater than or equal to 1/2 root 3.
- PublicationMétadonnées seulementOn the spectrum of the sum of generators of a finitely generated group II(1993)
;De La Harpe, Pierre ;Robertson, Guyan - PublicationAccès libre
- PublicationMétadonnées seulementIsoperimetric control of the spectrum of a compact hypersurface(2013-10-2)
; ;El Soufi, Ahmad - PublicationMétadonnées seulement