Counting The Number of Non-invertible matrices
55719
Order of general- and special linear groups over finite fields.
65574
How to prove that total number of non-isomorphic labelled trees of order $n$ is $n^{n-2}$?
69833
Number of elements not equal to their inverses is even number
33955
Geometric series of matrices
77554
Inverse of the sum of matrices
136389
Finding an isomorphic subring of matrices
60231
Number of equivalence classes of matrices under switching rows and columns
31326
Number of $(0,1)$ $m\times n$ matrices with no empty rows or columns
113169
Number of $\pm 1$ matrices whose determinant is negative or zero
26343
Number of certain (0,1)-matrices, Stanley's Enumerative Combinatorics
25229
Can any set of $n$ relatively prime elements be extended to an invertible matrix?
8557
Invertible Matrices are dense
127500
How many minors are in a matrix?
75276
Probability that a random binary matrix is invertible?
123366
Determinant of block matrices with non-square blocks
17348
Number of non-decreasing functions?
27865
What is the number of invertible $n\times n$ matrices in $\operatorname{GL}_n(F)$?