The dimension of the vector space of all trace-zero symmetric matrices
40154
Finding the dimension of real symmetric matrices with trace zero
8627
Number of equivalence classes of $w \times h$ matrices under switching rows and columns
20659
Is trace invariant under cyclic permutation with rectangular matrices?
157109
Finding the Dimension of a Matrix Polynomial: $W$ = { $p(B)$ : $p$ is a polynomial with real coefficients}
70021
Verify if symmetric matrices form a subspace
20920
Determinant of a block skew-symmetric matrix
65783
Proving: "The trace of an idempotent matrix equals the rank of the matrix"
31326
Number of $(0,1)$ $m\times n$ matrices with no empty rows or columns
143517
Isomorphisms Between a Finite-Dimensional Vector Space and its Dual
76160
Dimension of the sum of two vector subspaces
134162
What is a basis for the space of $n\times n$ Hermitian matrices?
133711
Orthogonal basis for infinite-dimensional vector spaces
72560
Eigenspace of the companion matrix of a monic polynomial
32896
Vector spaces for the irreducible representations of the Lorentz Group
55230
Dimension of set of commutable matrices
132300
Dimensions of vector spaces in an exact sequence
131993
Prove that vector space and dual space have same dimension