New posts in invariance

Quadratic P.S.D. differential operator that is invariant under $\textrm{SL}(2, \mathbb{R})$

functional-analysis differential-geometry lie-groups differential-operators invariance

What does rotational invariance mean in statistics?

statistics normal-distribution covariance invariance

Proof that $a\nabla^2 u = bu$ is the only homogenous second order 2D PDE unchanged/invariant by rotation

partial-differential-equations laplacian change-of-variable invariance

Partition 100 people, 4 from each country into 4 groups with conditions

combinatorics graph-theory algorithms contest-math invariance

Interesting Olympiad Style Problem about Invariance

combinatorics polynomials contest-math quadratics invariance

Rotation invariant tensors

rotations tensors invariance

Invariance of Euler-Lagrange equation

calculus-of-variations euler-lagrange-equation invariance

Is Haar measure reflection invariant?

locally-compact-groups invariance haar-measure

Is there a name for this property of functions on groups?

group-theory terminology definition average invariance

How to prove that there is no 5-ary operation in a clone satisfying certain conditions

abstract-algebra relations universal-algebra invariance

Suppose $M$ is an $m \times n$ matrix such that all rows and columns of $M$ sum to $1$. Show that $m=n$

linear-algebra matrices invariance

The Mathematics of Tetris

recreational-mathematics problem-solving packing-problem parity invariance