Expressing tensor product as direct sum
54119
Product of $SU(2)$ representations
85222
Direct sum of finitely-many non-abelian groups
5741
Direct product of abelian groups
74884
Tensor product in dual-space
25195
$2 \otimes_{R} 2 + x \otimes_{R} x$ is not a simple tensor in $I \otimes_R I$
35625
Direct sum of orthogonal subspaces
18373
Can infinite-dimensional vector spaces be decomposed into direct sum of its subspaces?
57916
Transpose of product of matrices
113259
The confusing nature of direct sum for finite abelian groups
77587
Cross product: matrix transformation identity
122623
Geometric intuition for the tensor product of vector spaces
33559
Product or sum of invertible matrix give an invertible matrix?
60470
Sum of truncated Gammas and degenerate
72295
A difficulty in understanding the proof of distributivity of tensor products over direct sums for modules.
18023
The direct sum $\oplus$ versus the cartesian product $\times$
4319
Vector space can be written as direct sum of subspaces
158343
how to prove an element is non-zero in a tensor-product