Zobrazeno 1 - 10 of 12 pro vyhledávání: '"Isaac Kornfeld"'
1
Topological realizations of families of ergodic automorphisms, multitowers and orbit equivalence
Autor: Isaac Kornfeld, Nicholas Ormes
Publikováno v: Israel Journal of Mathematics. 155:335-357
We study minimal topological realizations of families of ergodic measure preserving automorphisms (e.m.p.a.'s). Our main result is the following theorem. Theorem: Let {Tp:p∈I} be an arbitrary finite or countable collection of e.m.p.a.'s on nonatomi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::39ea415562df9b8ff80a82df6286c935
https://doi.org/10.1007/bf02773959
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5
On the cohomology equivalence classes for non-singular mappings
Autor: Andrei Krygin, Isaac Kornfeld
Publikováno v: Ergodic Theory and Dynamical Systems. 18:1385-1397
The structure of the cohomology equivalence classes for non-singular, not necessarily invertible mappings of probability spaces is studied. In particular, some results of Kochergin and Ornstein–Smorodinsky on the structure of these classes for meas
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::987a57fa05a61b6156b85cb29b3afd61
https://doi.org/10.1017/s014338579812093x
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6
Coboundaries of irreducible markov operators onC(K)
Autor: Isaac Kornfeld, Michael Lin
Publikováno v: Israel Journal of Mathematics. 97:189-202
LetK be a compact Hausdorff space, and letT be an irreducible Markov operator onC(K). We show that ifgeC(K) satisfies sup N ‖Σ =0 T j g‖
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::621d0a6122c489412fe2477f371bf074
https://doi.org/10.1007/bf02774036
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7
Interval translation mappings
Autor: Isaac Kornfeld, Michael Boshernitzan
Publikováno v: Ergodic Theory and Dynamical Systems. 15:821-832
A class of locally isometric, but not necessarily invertible mappings of an interval is considered. We show that under some conditions the study of the dynamical properties of these mappings can be reduced to interval exchange transformations. On the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04c15e32e18a16b288faf40b2af70c7f
https://doi.org/10.1017/s0143385700009652
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8
Nonexistence of universally accelerating linear summability methods
Autor: Isaac Kornfeld
Publikováno v: Journal of Computational and Applied Mathematics. 53:309-321
Let A = [amn], B = [bmn] be two regular Toeplitz matrices. Suppose that for every convergent sequence {{sn} its B-transform σ(B)m, where σ(B)m = ∑∞n = 1bmnsn, converges not slower than σ(A)m, in the sens. 0 e that ¦ σ(B)m − s ¦ ⩽ K ¦
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a47688c2eba2e24df7ccfaf7ce181e0
https://doi.org/10.1016/0377-0427(94)90059-0
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9
Unitary 𝑍^{𝑑}-actions with continuous spectrum
Autor: Boris Mityagin, Isaac Kornfeld, Vitaly Bergelson
Publikováno v: Proceedings of the American Mathematical Society. 119:1127-1134
For any unitary Zd-action on a Hilbert space with continuous spectrum weakly wandering vectors are dense. This wandering can be forced to occur along IP-sets. This is a generalization and strengthening of a result due to Krengel. Our method is based
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b0a30a364e9fd5041d0e9cd2c525619d
https://doi.org/10.1090/s0002-9939-1993-1145413-4
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