# 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.

**6**

**4**answers

### Maximum determinant of $\{0,1\}$-valued $n\times n$-matrices

**7**

**3**answers

### Transforming a binary matrix into triangular form using permutation matrices

**0**

**0**answers

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

**25**

**1**answer

### Determinants of binary matrices

**7**

**1**answer

### Coordinate free isomorphism between $d+1$-dimensional antisymmetric rank $2$ tensors and $d$-dimensional symmetric rank $2$ tensors

**12**

**1**answer

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

**0**

**0**answers

### Techniques for minimizing function [closed]

**2**

**1**answer

### Are Linear Maps resistant to Noise?

**18**

**4**answers

### Jacobi's equality between complementary minors of inverse matrices

**10**

**0**answers

### What are these matrices called?

**5**

**1**answer

### $(AB)^+\approx B^+A^+$ for $B$ “fat” enough?

**3**

**0**answers

### How to find the best similarity transformation between two symmetric matrices $\mathbf{A}$ and $\mathbf{B}$? [duplicate]

**3**

**0**answers

### How to show that a continuous family of symmetric matrices is uniformly positive?

**7**

**2**answers

### Direct product of free groups in $\mathrm{SL}_3(\mathbb{Z})$

**3**

**0**answers

### Similar reduced integral matrices

**2**

**2**answers

### Lower bound of positive entropies of automorphisms on tori

**3**

**1**answer

### Volume of polyhedron

**9**

**1**answer

### Automorphisms of $GL_n(\mathbb{Z})$

**4**

**0**answers

### Operator norm of a soft thresholded symmetric matrix

**7**

**2**answers

### A (linear) optimization problem subject to (linear) matrix inequality constraints

**0**

**0**answers

### Exact eigendecomposition of a specific Toeplitz matrix

**7**

**0**answers

### A limiting sequence of positive definite matrices

**237**

**25**answers

### Geometric Interpretation of Trace

**0**

**0**answers

### Eigenstructure and condition number of a block symmetric matrix

**4**

**1**answer

### A generalization of invariant and coinvariant subspaces

**2**

**0**answers

### Orthogonal Matrices and Cosets (translates) of Linear Subspaces

**4**

**1**answer

### The minimum rank of a matrix with a given pattern of zeros

**0**

**1**answer

### Estimating Maximal-Clique of Metric Graphs via the Rank of their Adjacency Matrix

**2**

**2**answers

### Finding an adjacency matrix whose cube's diagonal is equal to a given vector

**15**

**0**answers

### An inequality for matrix norms

**5**

**3**answers

### Which directed graphs have a normal adjacency matrix?

**1**

**0**answers

### Matrix Product Chain Representation of an Addition Chain [closed]

**5**

**2**answers

### minimum-maximum entries matrix

**24**

**5**answers

### When is a matrix power nonnegative

**2**

**0**answers

### On the existence of fixed points of a matrix iteration

**26**

**0**answers

### Existence of orthogonal basis of symmetric $n\times n$ matrices, where each matrix is unitary?

**1**

**0**answers

### A $\mathbb C$-linear map from $M(p-1,\mathbb C)$ to $\mathbb C^\hat G$, where $p$ is an odd prime and $G=\mathbb Z/(p) ^\times$

**2**

**0**answers

### k-rank numerical range of an operator

**3**

**1**answer

### Largest eigenvalue of product of orthogonal-projection rank-1 perturbation

**1**

**1**answer

### Set of integer matrices $A$ such that $(A^k)_{k\in\mathbb{N}}$ is eventually periodic

**1**

**1**answer

### How to verify the characteristic polynomial? [closed]

**8**

**1**answer

### Making binary matrix positive semidefinite by switching signs

**11**

**1**answer

### Decide if a matrix is transposable

**1**

**1**answer

### Linear (in)dependence of minors of a matrix

**0**

**0**answers

### Computing with a vector subspace equipped with a prescribed basis over finite fields

**7**

**0**answers

### A generalization of matrix minors to non-integer values

**1**

**0**answers

### matching two positive-semidefinite matrices

**1**

**0**answers

### Generic deformation of matrix

**25**

**2**answers

### Symmetric strengthening of the Cauchy-Schwarz inequality

**12**

**1**answer