Number of equivalence classes of matrices under switching rows and columns
8627
Number of equivalence classes of $w \times h$ matrices under switching rows and columns
151526
Determinant of a matrix with different cases for its entries
152869
Rank of circulant matrix with $k$ ones per row
36613
Prove that simultaneously diagonalizable matrices commute
98518
Cardinality of equivalence relations on N
143517
Isomorphisms Between a Finite-Dimensional Vector Space and its Dual
86150
Geometric interpretation of matrices
12955
Classification of $n\times n$ real matrices up to congruence
108567
Nielsen & Chuang Exercise 2.2 - “Matrix representations: example”
147797
If $A$ is an invertible matrix, then the column span of $A$ equals $F^{n\times1}$
55230
Dimension of set of commutable matrices
64517
Prove that row rank of a matrix equals column rank
57221
counting the number of elements in a conjugacy class of $S_n$
87451
Construction of matrices under ZFC axioms
30889
Classifying complex $2\times 2$ matrices up to similarity
89167
Cardinality of equivalence relations in $\mathbb{N}$
118293
Strategy for determining the number of homomorphisms between two Groups