# Questions tagged [matrices]

Questions where the notion matrix has an important or crucial role (for the latter, note the tag matrix-theory for potential use). Matrices appear in various parts of mathematics, and this tag is typically combined with other tags to make the general subject clear, such as an appropriate top-level tag ra.rings-and-algebras, co.combinatorics, etc. and other tags that might be applicable. There are also several more specialized tags concerning matrices.

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### Convex hull of all rank-$1$ $\{-1, 1\}$-matrices?

**1**

**1**answer

### Matrix of powers of pairwise differences

**4**

**1**answer

### Inverse of a matrix and the inverse of its diagonals

**1**

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### Non-trivial ways for generating matrices $A$ for which $A + A^T$ is positive-definite?

**2**

**1**answer

### Discrete dynamical system and bound on norm

**1**

**1**answer

### Minimal value of matrix norm induced by a norm

**0**

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### Is the Weak Popov Form of a matrix over a polynomial ring unique?

**1**

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### A recap of regularity of singular values as a function over M_n

**5**

**1**answer

### Determining the primitive order of a binary matrix

**0**

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### Determinant of the Sum of a Left Circulant and a nonsingular matrix over field of order 2

**0**

**1**answer

### Number of symmetric matrix with fixed margins

**3**

**1**answer

### Dimension of fixed vectors of a semi-linear operator

**8**

**1**answer

### What is the minimum $k$ such that $A^k \equiv I$ mod p for invertible matrices?

**5**

**1**answer

### Perturbing a normal matrix

**4**

**2**answers