منابع مشابه
Z2 Actions on Spaces of Certain Type
In this paper we study Z2 actions on spaces which have the cohomology of one point union P (n)∨S or S ∨S ∨S . We determine the possible fixed point sets and give examples of all possible cases.
متن کاملInverse Spectral Problem for Analytic Domains Ii: Z2- Symmetric Domains
This paper develops and implements a new algorithm for calculating wave trace invariants of a bounded plane domain around a periodic billiard orbit. The algorithm is based on a new expression for the localized wave trace as a special multiple oscillatory integral over the boundary, and on a Feynman diagrammatic analysis of the stationary phase expansion of the oscillatory integral. The algorith...
متن کاملCounting Strings over Z2 with Given Elementary Symmetric Function Evaluations
Let α be a string over Zq , where q = 2. The j-th elementary symmetric function evaluated at α is denoted ej(α). We study the cardinalities Sq(m; τ1, τ2, . . . , τt) of the set of length m strings for which ei(α) = τi. The profile k(α) = 〈k1, k2, . . . , kq−1〉 of a string α is the sequence of frequencies with which each letter occurs. The profile of α determines ej(α), and hence Sq . Let hn : Z...
متن کاملZ2-Indices and Factorization Properties of Odd Symmetric Fredholm Operators
A bounded operator T on a separable, complex Hilbert space is said to be odd symmetric if IT I = T where I is a real unitary satisfying I = −1 and T t denotes the transpose of T . It is proved that such an operator can always be factorized as T = IAIA with some operator A. This generalizes a result of Hua and Siegel for matrices. As application it is proved that the set of odd symmetric Fredhol...
متن کاملTopologies for the digital spaces Z2 and Z3
We show that there are only two topologies in Z and five topologies in Z whose connected sets are connected in the intuitive sense. Both topologies for Z are well known (e.g., one is presented in D. Marcus, F. Wyse et al., Amer. Math. Monthly 77, pp. 1119, 1979, and the second in E. Khalimsky et al., Topology and its Applications 36, pp. 1–17, 1990) and found applications in computer graphics a...
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ژورنال
عنوان ژورنال: Pacific Journal of Mathematics
سال: 2008
ISSN: 0030-8730
DOI: 10.2140/pjm.2008.236.1