Toeplitz -extensions
Mariusz Lemańczyk (1988)
Annales de l'I.H.P. Probabilités et statistiques
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Mariusz Lemańczyk (1988)
Annales de l'I.H.P. Probabilités et statistiques
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Geoffrey Goodson (2000)
Colloquium Mathematicae
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We study certain symmetries that arise when automorphisms S and T defined on a Lebesgue probability space (X, ℱ, μ) satisfy the equation . In an earlier paper [6] it was shown that this puts certain constraints on the spectrum of T. Here we show that it also forces constraints on the spectrum of . In particular, has to have a multiplicity function which only takes even values on the orthogonal complement of the subspace . For S and T ergodic satisfying this equation further constraints...
F. Z. Hadjam, C. Moraga, M. K. Rahmouni (2007)
Mathware and Soft Computing
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J. L. Vega (2010)
Boletín de Estadística e Investigación Operativa. BEIO
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Kurz, Sascha (2009)
Serdica Journal of Computing
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We consider point sets in (Z^2,n) where no three points are on a line – also called caps or arcs. For the determination of caps with maximum cardinality and complete caps with minimum cardinality we provide integer linear programming formulations and identify some values for small n.
Janicka, L.
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