scholarly journals On invariant random subgroups of block-diagonal limits of symmetric groups

2019 ◽  
Vol 147 (6) ◽  
pp. 2481-2494
Author(s):  
Artem Dudko ◽  
Kostya Medynets
Keyword(s):  
Symmetric Groups ◽  
Invariant Random Subgroups ◽  
Block Diagonal

scholarly journals Invariant random subgroups of strictly diagonal limits of finite symmetric groups

2014 ◽  
Vol 46 (5) ◽  
pp. 1007-1020 ◽  
Author(s):  
Simon Thomas ◽  
Robin Tucker-Drob
Keyword(s):  
Symmetric Groups ◽  
Invariant Random Subgroups

Parallelizable block diagonal preconditioners for 3D viscous compressible flow calculations

1993 ◽  
Author(s):  
LAURA DUTTO ◽  
WAGDI HABASHI ◽  
MICHEL FORTIN ◽  
MICHEL ROBICHAUD
Keyword(s):  
Compressible Flow ◽  
Viscous Compressible Flow ◽  
Block Diagonal

Collapsed adjacency diagrams and matrices of commuting graph, 𝒞 (G, X ) for some symmetric groups, Sym(n)

2021 ◽  
Author(s):  
Athirah Nawawi ◽  
Peter J. Rowley
Keyword(s):  
Symmetric Groups ◽  
Commuting Graph

Autoencoder-Based Latent Block-Diagonal Representation for Subspace Clustering

2020 ◽  
pp. 1-11
Author(s):  
Yesong Xu ◽  
Shuo Chen ◽  
Jun Li ◽  
Zongyan Han ◽  
Jian Yang
Keyword(s):  
Subspace Clustering ◽  
Diagonal Representation ◽  
Block Diagonal

scholarly journals Active block diagonal subspace clustering

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Ziqi Xie ◽  
Lihong Wang
Keyword(s):  
Subspace Clustering ◽  
Active Block ◽  
Block Diagonal

Infinitely presented permutation stable groups and invariant random subgroups of metabelian groups

2021 ◽  
pp. 1-36
Author(s):  
ARIE LEVIT ◽  
ALEXANDER LUBOTZKY
Keyword(s):  
Ergodic Theorem ◽  
Abelian Groups ◽  
Wreath Products ◽  
Finitely Generated ◽  
Metabelian Groups ◽  
Amenable Groups ◽  
Pointwise Ergodic Theorem ◽  
Lamplighter Group ◽  
Invariant Random Subgroups

Abstract We prove that all invariant random subgroups of the lamplighter group L are co-sofic. It follows that L is permutation stable, providing an example of an infinitely presented such group. Our proof applies more generally to all permutational wreath products of finitely generated abelian groups. We rely on the pointwise ergodic theorem for amenable groups.

Subspace Clustering with Block Diagonal Sparse Representation

2021 ◽  
Author(s):  
Xian Fang ◽  
Ruixun Zhang ◽  
Zhengxin Li ◽  
Xiuli Shao
Keyword(s):  
Sparse Representation ◽  
Subspace Clustering ◽  
Block Diagonal

Structured Dictionary Learning with Block Diagonal Regularization for Image Classification

2020 ◽  
Author(s):  
Manman Xu ◽  
Runhua Jiang ◽  
Tao Wang ◽  
Di Wang ◽  
Xiaoju Lu
Keyword(s):  
Image Classification ◽  
Dictionary Learning ◽  
Structured Dictionary ◽  
Block Diagonal

scholarly journals Dominant and global dimension of blocks of quantised Schur algebras

2021 ◽  
Author(s):  
Ming Fang ◽  
Wei Hu ◽  
Steffen Koenig
Keyword(s):  
Hecke Algebras ◽  
Symmetric Groups ◽  
Global Dimension ◽  
Group Algebras ◽  
Dominant Dimension ◽  
Schur Algebras ◽  
Homological Dimensions ◽  
Weyl Duality

AbstractGroup algebras of symmetric groups and their Hecke algebras are in Schur-Weyl duality with classical and quantised Schur algebras, respectively. Two homological dimensions, the dominant dimension and the global dimension, of the indecomposable summands (blocks) of these Schur algebras S(n, r) and $$S_q(n,r)$$ S q ( n , r ) with $$n \geqslant r$$ n ⩾ r are determined explicitly, using a result on derived invariance in Fang, Hu and Koenig (J Reine Angew Math 770:59–85, 2021).

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