Zobrazeno 1 - 10
of 185
pro vyhledávání: '"Group (mathematics)"'
Autor:
Radan Kučera, Cornelius Greither
Publikováno v:
Canadian Journal of Mathematics. 73:1506-1530
The aim of this paper is to study circular units in the compositum K of t cyclic extensions of ${\mathbb {Q}}$ ( $t\ge 2$ ) of the same odd prime degree $\ell $ . If these fields are pairwise arithmetically orthogonal and the number s of primes ramif
Publikováno v:
Canadian Journal of Mathematics. 72:1275-1303
A finitely presented 1-ended group $G$ has semistable fundamental group at infinity if $G$ acts geometrically on a simply connected and locally compact ANR $Y$ having the property that any two proper rays in $Y$ are properly homotopic. This property
Autor:
Roger R. Smith, Jan Cameron
Publikováno v:
Canadian Journal of Mathematics. 72:557-562
This note corrects an error in our paper “A Galois correspondence for reduced crossed products of unital simple $\text{C}^{\ast }$-algebras by discrete groups”, http://dx.doi.org/10.4153/CJM-2018-014-6. The main results of the original paper are
Autor:
Jan Cameron, Roger R. Smith
Publikováno v:
Canadian Journal of Mathematics. 71:1103-1125
Let a discrete group $G$ act on a unital simple $\text{C}^{\ast }$-algebra $A$ by outer automorphisms. We establish a Galois correspondence $H\mapsto A\rtimes _{\unicode[STIX]{x1D6FC},r}H$ between subgroups of $G$ and $\text{C}^{\ast }$-algebras $B$
Autor:
Sandeep Varma
Publikováno v:
Canadian Journal of Mathematics. 69:1169-1200
Let P = M N be a Levi decomposition of a maximal parabolic subgroup of a connected reductive group G over a p-adic field F. Assume that there exists w0∊ G(F) that normalizes M and conjugates P to an opposite parabolic subgroup. When N has a Zariski
Autor:
Jason Crann
Publikováno v:
Canadian Journal of Mathematics. 69:1064-1086
Building on our previous work, we study the non-relative homology of quantum group convolution algebras. Our main result establishes the equivalence of amenability of a locally compact quantum group $\mathbb{G}$ and 1-injectivity of $L^{\infty}(\wide
Autor:
Sang-Gyun Youn, Hun Hee Lee
Publikováno v:
Canadian Journal of Mathematics. 69:434-452
In this paper we introduce a new way of deforming convolution algebras and Fourier algebras on locally compact groups. We demonstrate that this new deformation allows us to reveal some information about the underlying groups by examining Banach algeb
Autor:
F. Ghahramani, S. Zadeh
Publikováno v:
Canadian Journal of Mathematics. 69:3-20
Let G be a locally compact group and let ω be a continuous weight on G. We show that for each of the Banach algebras L1(G,ω ), M(G,ω ), LUC(G,ω -1)*, and L1(G, ω)**, the order structure combined with the algebra structure determines the weighted
Autor:
David J. Fernández Bretón
Publikováno v:
Canadian Journal of Mathematics. 68:44-66
We answer two questions of Hindman, Stepr\=ans and Strauss, namely we prove that every strongly summable ultrafilter on an abelian group is sparse and has the trivial sums property. Moreover we show that in most cases the sparseness of the given ultr
Autor:
Ivan Edgardo Pan, Aron Simis
Publikováno v:
Canadian Journal of Mathematics. 67:23-941
This paper is concerned with suitable generalizations of a plane de Jonquières map to higher dimensional space ℙn with n ≥ 3. For each given point of ℙn there is a subgroup of the entire Cremona group of dimension n consisting of such maps. We