Results 151 to 160 of about 29,073 (168)
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Invariant Cocycles Have Abelian Ranges
Monatshefte f�r Mathematik, 2002zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Greschonig, Gernot, Schmidt, Klaus
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Journal of the London Mathematical Society, 1985
The author strengthens a result of \textit{K. Schmidt} [Cocycles on ergodic transformation groups (1977; Zbl 0421.28017.)] providing a sufficient condition for an additive real measurable cocycle to be a coboundary. The paper under review deals with the general case while the result of Schmidt treates the ergodic one.
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The author strengthens a result of \textit{K. Schmidt} [Cocycles on ergodic transformation groups (1977; Zbl 0421.28017.)] providing a sufficient condition for an additive real measurable cocycle to be a coboundary. The paper under review deals with the general case while the result of Schmidt treates the ergodic one.
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International Journal of Mathematics, 2012
UHF flows are the flows obtained as inductive limits of flows on full matrix algebras. We will revisit universal UHF flows and give an explicit construction of such flows on a UHF algebra Mk∞ for any k and also present a characterization of such flows. Those flows are UHF flows whose cocycle perturbations are almost conjugate to themselves.
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UHF flows are the flows obtained as inductive limits of flows on full matrix algebras. We will revisit universal UHF flows and give an explicit construction of such flows on a UHF algebra Mk∞ for any k and also present a characterization of such flows. Those flows are UHF flows whose cocycle perturbations are almost conjugate to themselves.
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2011
After relating the notion of $ $-recurrence in skew products to the range of values taken by partial ergodic sums and Lyapunov exponents, ergodic $\mathbb{Z}$-valued cocycles over an irrational rotation are presented in detail. First, the generic situation is studied and shown to be $1/n$-recurrent. It is then shown that for any $ (n) 1/2$, there are
Chaika, Jon, Ralston, David
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After relating the notion of $ $-recurrence in skew products to the range of values taken by partial ergodic sums and Lyapunov exponents, ergodic $\mathbb{Z}$-valued cocycles over an irrational rotation are presented in detail. First, the generic situation is studied and shown to be $1/n$-recurrent. It is then shown that for any $ (n) 1/2$, there are
Chaika, Jon, Ralston, David
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2004
Invariants in a state-sum form that are defined in a similar manner for both classical knots and knotted surfaces were first presented in [CJKLS03] (and announced in [CJKLS99]) using cocycles of quandle homology theory. The quandle cocycle knot invariants are natural generalizations of the Dijkgraaf-Witten invariant for 3-manifolds and other state-sum ...
Scott Carter +2 more
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Invariants in a state-sum form that are defined in a similar manner for both classical knots and knotted surfaces were first presented in [CJKLS03] (and announced in [CJKLS99]) using cocycles of quandle homology theory. The quandle cocycle knot invariants are natural generalizations of the Dijkgraaf-Witten invariant for 3-manifolds and other state-sum ...
Scott Carter +2 more
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Journal of Interdisciplinary Mathematics, 2019
Mohammad Reza Molaei, Tahere Nasirzadeh
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Mohammad Reza Molaei, Tahere Nasirzadeh
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Multiplicative cocycles with restrictions ( $$ \mathcal{F} $$ -cocycles)
2009openaire +1 more source