# 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.

**2**

**2**answers

### Rate of convergence for eigendecomposition

**2**

**1**answer

### Bounding entries of the inverse of a matrix with bounded entries

**0**

**0**answers

### Eigenvalues and eigenvectors of a very large sparse matrix

**3**

**1**answer

### Mapping inclusion theorem for the numerical range

**0**

**0**answers

### The derivative in inverse matrix [on hold]

**1**

**0**answers

### Solution of a manipulated equation vs the maximum eigenvalue and eigenvector of a non-negative matrix

**9**

**0**answers

### More mysterious properties of Gram matrix

**6**

**0**answers

### A curious $q$-identity

**16**

**1**answer

### 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

**2**

**0**answers

### 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**

**0**answers

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

**1**

**0**answers

### 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**

**0**answers

### 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

### Stable matrices and their spectra

**3**

**1**answer

### Real part of eigenvalues and Laplacian

**3**

**1**answer

### Spectrum of this block matrix

**4**

**1**answer

### Bicommutant theorem for commutative operator algebras

**1**

**0**answers

### Smallest eigenvalue for Gram matrix of unit norm matrices

**1**

**0**answers

### On the exponent of a certain matrix $A$ in characteristic $p > 0$

**0**

**1**answer

### Finding the minimum sum of a subset of entries of a given matrix with combinatorial constraints

**1**

**0**answers

### inequality for the difference between largest eigenvalues of an irreducible matrix $A$ and a matrix $B$ with all the entries non-negative

**2**

**0**answers

### Schemes obtained replacing variables by $n \times n$ matrices?

**3**

**2**answers

### Completely positive matrix with positive eigenvalue

**5**

**2**answers

### Are there large integer matrices with entries computable in polynomial time, such that all minors are nonzero?

**8**

**1**answer

### A question about special linear group

**8**

**1**answer

### Distance between subalgebras and positive elements in matrices

**0**

**0**answers

### Matrix eigenvalues inequality (3)

**1**

**0**answers

### Matrix eigenvalues inequality (2)

**0**

**0**answers

### Marginal Distribution of Partition Matrix

**0**

**0**answers

### Reachability of eigenvalues for additive matrix equation

**2**

**1**answer

### Matrix eigenvalues inequality (1)

**0**

**0**answers

### random matrix integration

**0**

**0**answers

### Stability analysis with minimal spectral norm

**0**

**1**answer

### Intersection between a line and a n dimensional parallelotope

**1**

**0**answers

### An inequality concerning the eigenvalues and eigenvectors of an SPD matrix

**0**

**0**answers

### Intersection of parameterized cosets in a free-abelian group

**27**

**1**answer

### Determinants of binary matrices

**12**

**1**answer

### Are there nice isomorphisms $\operatorname{S}^2(k^n)\cong\Lambda^2(k^{n+1})$?

**2**

**1**answer

### Are Linear Maps resistant to Noise?

**10**

**0**answers

### What are these matrices called?

**3**

**0**answers