Can any 2x2 matrix be written like sum of two squared matrices?
11620
Is it true that any matrix in $M_2(\mathbb R)$ is the sum of two squares?
132734
Can 2018 be written as a sum of two squares? If can, what is the expression?
12733
How to denote matrix concatenation?
27767
Are two matrices similar iff they have the same Jordan Canonical form?
138081
How to determine whether a number can be written as a sum of two squares?
138072
Linear time algorithm for 2-SUM
46606
Can an integer of the form $4n+3$ written as a sum of two squares?
80161
linear algebra - Compute matrix associated to quadratic form.
43570
Finding two non-zero matrices where $AX = BA$
139162
Complex number isomorphic to certain $2\times 2$ matrices?
75066
If the product of two square matrices is invertible, then both matrices are invertible
4319
Vector space can be written as direct sum of subspaces
112353
Prove that all 2x2 orthogonal matrices can be expressed as Rotation or Reflection
120937
Matrices that commute with all matrices
108012
A matrix $M$ that commutes with any matrix is of the form $M=\alpha I$
33559
Product or sum of invertible matrix give an invertible matrix?
120744
How many $n\times m$ binary matrices are there, up to row and column permutations?