New posts in linear-algebra

Invariance of the norm by permutations

linear-algebra functional-analysis

Determinant Formula for derangement of $n$ numbers?

linear-algebra combinatorics derangements

Map closed under addition but not multiplication

linear-algebra education

To prove that a mathematical statement is false is it enough to find a counterexample?

linear-algebra proof-verification induction

uniqueness of barycentric coordinates of a simplex

linear-algebra triangles simplex barycentric-coordinates

How to determine if a set of five $2\times2$ matrices is independent

linear-algebra matrices vector-spaces

What is the Definition of Linear Algebra?

linear-algebra soft-question definition

Will $2$ linear equations with $2$ unknowns always have a solution?

linear-algebra systems-of-equations

Why the determinant of a matrix with the sum of each row's elements equal 0 is 0?

linear-algebra matrices

If $A$ is singular, is $A^3+A^2+A$ singular?

linear-algebra matrices

Solving a dynamical system - separation

linear-algebra ordinary-differential-equations dynamical-systems

Show: If the adjoint of T is -T, all eigenvalues are purely imaginary

Find the eigenvalue of a stochastic matrix by only using linear operator

linear-algebra matrices solution-verification eigenvalues-eigenvectors

Is self-adjointness really a property of an operator, or of an operator and an inner product?

linear-algebra functional-analysis hilbert-spaces linear-transformations

Left and Right inverses of linear operators

Trace of AB = Trace of BA [duplicate]

Finding the rank of the matrix directly from eigenvalues

linear-algebra matrices eigenvalues-eigenvectors matrix-rank

Suppose A is an n-by-n matrix with its diagonal entries are n and other entries are one. Find determinant of A.

linear-algebra matrices determinant

Show that if $X \succeq Y$, then $\det{(X)}\ge\det{(Y)}$

linear-algebra inequality determinant positive-definite

Computing the trace and determinant of $A+B$, given eigenvalues of $A$ and an expression for $B$

linear-algebra matrices eigenvalues-eigenvectors determinant