New posts in quotient-spaces

If $\{q_\alpha: X_\alpha \to Y_\alpha\}$ is a family of quotient maps, then $q:\coprod_\alpha X_\alpha \to \coprod_\alpha Y_\alpha$ is a quotient map.

general-topology proof-verification proof-writing quotient-spaces

Question about quotient of a compact Hausdorff space

general-topology compactness quotient-spaces separation-axioms

Suggestions for computing $\mathbb{Z}[i]^3/K$ where $K=\langle(1,2,1), (0,0,5), (1,-i,6)\rangle$.

abstract-algebra modules quotient-spaces

On the norm of a quotient of a Banach space.

functional-analysis banach-spaces normed-spaces quotient-spaces

When is the product of two quotient maps a quotient map?

general-topology quotient-spaces product-space

Is it true that $f[G+L]$ is closed in $E/M$?

functional-analysis banach-spaces quotient-spaces

Acting on CP(2) by conjugation

geometric-topology quotient-spaces projective-space

$X/{\sim}$ is Hausdorff if and only if $\sim$ is closed in $X \times X$

general-topology quotient-spaces separation-axioms

Motivation for the norm of the quotient space

functional-analysis normed-spaces quotient-spaces motivation

Why is this quotient space not Hausdorff?

general-topology topological-groups quotient-spaces separation-axioms