Determine all real $x$ that satisfy $\det A=0$
517
Determinant of a specially structured matrix ($a$'s on the diagonal, all other entries equal to $b$)
76764
Find two closed subsets or real numbers such that $d(A,B)=0$ but $A\cap B=\varnothing$
9574
How to show that $\det(AB) =\det(A) \det(B)$?
40014
A polynomial that is zero on an open set
35631
$H_0(X,A) = 0 \iff A \cap X_i \neq \emptyset \forall $ path-components $X_i$
154459
Constructing a HoTT proof term of 1≠0
13656
Prove existence of a real root.
33891
If $\mathbf A$ and $\mathbf B$ are Hermitian, when does $\det(\mathbf A-\lambda\mathbf B)=0$ have only real roots?
119999
A property of every real polynomial.
81181
Prove that $\det(M-I)=0$ if $\det(M)=1$ and $MM^T=I$
67784
If $A + A^t = 2I$ then $\det(A) \geq 1$
50732
How to determine direct solution of determinant?
106305
Prove/disprove: if $\det(A+X) = \det(B + X)$ for all $X$, then $A=B$
147207
Is it always true that $\det(A^2+B^2)\geq0$?
106011
Proving it has all real roots
52621
Why is $\det(A - \lambda I)$ zero?
39256
Finding $\det(I+A^{100})$ where $A\in M_3(R)$ and eigenvalues of $A$ are $\{-1,0,1\}$