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The basic connection between almost periodic point and minimal set is this : If x e X then x is almost periodic if and only if the orbit closure xT of x is minimal  . ... In constructing nonequicontinuous minimal sets from coset transformation groups, the following theorem shows that it appears necessary to start from relatively complicated groups G: Let G be a locally ...doi:10.5802/aif.160 fatcat:3ofaka4pmnhrdobzkvdooxt5wu
Let (X, 7) be the equicontinuous minimal transformation group with X = irwZ7, the Cantor group, and S = z-Z2 endowed with the discrete topology acting on X by right multiplication. ... For any countable group Twe construct ... equicontinuous minimal set with abelian phase group be locally almost periodic? ...doi:10.1073/pnas.73.4.1007 pmid:16592304 pmcid:PMC430187 fatcat:7jfm4bgp7zfjbf2buudti3jqp4
Hence X* is an almost periodic minimal set and thus a monothetic group, called the structure group of the original locally almost periodic minimal set. ... Since the monothetic groups can be constructed in their entirety as the character groups of the subgroups of the discrete circle group (Anzai and Kakutani 1943)  , the construction problem for almost ...doi:10.1090/s0002-9904-1958-10223-2 fatcat:5nu3xkhtwrbm3px32ednqxs37m
We show the existence of such sets which contain asymptotic orbits, which are locally almost periodic and which are not only minimal under the defining transformation 7 but are also minimal under every ... The simplest example of a minimal set is a periodic motion. Minimal sets which are not periodic motions have been constructed by various devices (cf. e. g., Morse ).’ ...doi:10.2307/2371769 fatcat:tnfnrwkwxzef7pxmkmig4jtlke
The trans- formation group (X,7) is almost periodic, regularly almost periodic, recursive if and only if (2*, 7) is, respectively, almost periodic, regularly almost periodic, recursive. L. ... Paul, Michael E. 9202 Construction of almost automorphic symbolic minimal flows. General Topology and Appl. 6 (1976), no. 1, 45-56. ...
American Journal of Mathematics
We show the existence of such sets which contain asymptotic orbits, which are locally almost periodic and which are not only minimal under the defining transformation 7 but are also minimal under every ... The simplest example of a minimal set is a periodic motion. Minimal sets which are not periodic motions have been constructed by various devices (cf. e. g., Morse ).’ ...
Theorem 1: Let (7, X) be an effective almost periodic transformation group, where X is a compact, separable, locally Euclidean n-space; let J be a closed n-cell in X; then T(J) is locally connected. ... The author discusses various results of his and of H. Furstenberg on minimal sets in the context of transformation groups and, in particular, minimal transformation groups. ...
[MF 3016] A group G is called maximally (or minimally) almost periodic if there exists for every element a distinct from the unit element e (or for no element a) an almost periodic function f on G such ... Hence G; is an invariant subgroup of Gz generated by X and Y. M. S. Knebelman (Pullman, Wash.). v. Neumann, J. and Wigner, E. P. Minimally almost periodic groups. ...
Here we present a simple proof of Bohr's fundamental theorem for almost periodic functions which we then generalize to almost periodic functions on general topological groups. ... The almost periodic functions form a natural example of a non-separable normed space. As such, it has been a challenge for constructive mathematicians to find a natural treatment of them. ... Parts of this research can already be found in my PhD-thesis  . I would like to thank Wim Veldman for his advice during this period. ...doi:10.2168/lmcs-1(3:3)2005 fatcat:5dhrmkjfxndvvkawe6qu4qtq4q
Group extensions of vector field flows for which the orbit closure map forms a fiber bundle are constructed for the case of minimal flows on compact manifolds and compact Lie groups. ... Conditions for which minimal nontoral extensions exist are studied. on the left. ... Z and Y + aZ are pointwise almost periodic since both are G-lifts of pointwise almost periodic transformation groups. ...doi:10.1090/s0002-9939-1976-0425933-8 fatcat:ws4x3atrj5at5hxush54nrsica
Group extensions of vector field flows for which the orbit closure map forms a fiber bundle are constructed for the case of minimal flows on compact manifolds and compact Lie groups. ... Conditions for which minimal nontoral extensions exist are studied. on the left. ... Z and Y + aZ are pointwise almost periodic since both are G-lifts of pointwise almost periodic transformation groups. ...doi:10.2307/2041506 fatcat:wowwhfg7mjhb5i7omtc4nvkhuu
Lelek (Warsaw) Wu, Ta-sun 3650 Construction of locally almost periodic minimal trans- formation groups. Math. Systems Theory 1 (1967), 157-163. The author considers the following problem. ... Is there a topology » on G x J and an action of T on GxJ such that (1) (@xJ, ») isa compact Hausdorff space, (2) (@ x J, 7') is a locally almost periodic minimal transformation group, (3) the map (g,a) ...
It is further shown that for such spaces X a totally minimal flow cannot be locally almost periodic. So on such spaces one cannot have a locally almost periodic minimal flow. ... almost periodic. ... Denoting by P the proximal relation, since X is locally almost periodic we have that P is a closed equivalence relation (see  ) and the induced transformation group (X/P, T, 7T*) is almost periodic ...doi:10.1090/s0002-9904-1963-10933-7 fatcat:3pioaaj4fzcepb55lgckqcuqia
Leonard Shapiro has kindly pointed out that a proposition equivalent to our lemma appears in a paper of R. Ellis ... Using a construction of Baidosov [l], we show that a topological transformation group with completely regular phase space X and locally compact phase group T can be equivariantly embedded in a transformation ... The almost periodicity of (x, y) now follows from that of x*y by means of the lemma. ...doi:10.1090/s0002-9939-1969-0244979-2 fatcat:kz6izdkm4za5napsy5v4ijdily
Theorem 3 and its corollaries indicate that given a compact group I, a dense subgroup 7, and a set J one should be able to construct the minimal ideal J of a locally almost periodic transformation group ... An interesting problem is to provide 'XJ with a compact Hausdorff topology and to determine the action of T on !XJ such that (T XJ, T) is locally almost periodic. REFERENCES 1. ...
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