منابع مشابه
Tame Arcs on Disks
It is the goal of this note to show that each disk in E3 contains a tame arc which intersects the boundary of D. In [l ] Bing shows that each disk in E3 contains many tame arcs. The reason that the arguments given in [l ] do not show that each disk contains a tame arc intersecting the boundary is that a disk in E3 need not lie on a closed surface in E3 [7]. This difficulty can be overcome using...
متن کاملA Fundamental Theorem on Decompositions of the Sphere into Points and Tame Arcs
1. Introduction. R. H. Bing showed that an upper semicontinuous decomposition of £3 into points and tame arcs did not necessarily produce a decomposition space topologically equivalent to E3 [1J. M. L. Curtis and R. L. Wilder showed [2] that the decomposition space of Bing was a homotopy manifold, thus negatively answering a question proposed by Griffiths [3J. R. Rosen recently announced [4] a ...
متن کاملOn Tame Dynamical Systems
A dynamical version of the Bourgain-Fremlin-Talagrand dichotomy shows that the enveloping semigroup of a dynamical system is either very large and contains a topological copy of βN, or it is a “tame” topological space whose topology is determined by the convergence of sequences. In the latter case we say that the dynamical system is tame. We show that (i) a metric distal minimal system is tame ...
متن کاملOn Tame Enveloping Semigroups
A dynamical version of the Bourgain-Fremlin-Talagrand dichotomy shows that the enveloping semigroup of a dynamical system is either very large and contains a topological copy of βN, or it is a “tame” topological space whose topology is determined by the convergence of sequences. In the latter case we say that the dynamical system is tame. We show that (i) a metric distal minimal system is tame ...
متن کاملOn Tame Transformation Method (ttm)
A fast encryption system (TTM) will be discussed in this article. TTM is an encryp-tion system based on multivariate tame automorphisms over some small eld. It is related to an open and diicult problem in mathematics. The TTM system is 100 or more faster than RSA 1024 and the corresponding ECC. In 11] and 12], the mathematical part of the system is provided. However, the presentation there is q...
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ژورنال
عنوان ژورنال: Proceedings of the American Mathematical Society
سال: 1965
ISSN: 0002-9939
DOI: 10.1090/s0002-9939-1965-0175103-9