New posts in cardinals

Number of countable subsets of $\mathbb{R}$

elementary-set-theory cardinals

Union of Uncountably Many Uncountable Sets

set-theory cardinals

Can we treat proper classes in a well-defined way that has them behave as ordinal numbers?

set-theory cardinals ordinals surreal-numbers

Why study cardinals, ordinals and the like?

elementary-set-theory cardinals ordinals motivation

Cardinal power $\kappa^\kappa$. When is it equal to $2^\kappa$?

set-theory cardinals

axiom of choice: cardinality of general disjoint union

set-theory cardinals axiom-of-choice

Is there an easy proof for ${\aleph_\omega} ^ {\aleph_1} = {2}^{\aleph_1}\cdot{\aleph_\omega}^{\aleph_0}$?

set-theory cardinals

Question about Generalized Continuum Hypothesis [closed]

set-theory cardinals

Given an infinite set of cardinality $X$, is there a chain in $\mathcal P(X)$ of the same cardinalty of $\mathcal P(X)$?

set-theory cardinals

Concerning $\kappa+\kappa=\kappa$ for any infinite cardinal $\kappa$

elementary-set-theory cardinals axiom-of-choice

Why hasn't GCH become a standard axiom of ZFC?

set-theory cardinals axioms

Is it true that $\dim(X) \leq \dim(X^{\ast})$ for every infinite dimentional Banach space $X$?

banach-spaces cardinals

There is no smallest infinity in calculus?

calculus limits elementary-set-theory cardinals infinity

Covering $\mathbb R^2$ with function graphs

real-analysis geometry functions set-theory cardinals

What do the cosets of $\mathbb{R} / \mathbb{Q}$ look like?

real-analysis group-theory cardinals rational-numbers

Does $\mathfrak{(p<q)\land(r<s)}$ imply $\mathfrak{p^r<q^s}$?

logic set-theory cardinals

Why does the number of possible probability distributions have the cardinality of the continuum?

probability-theory statistics measure-theory statistical-inference cardinals

Explicit bijection between $[0,1)$ and $(0,1)$ [duplicate]

functions cardinals

Proof that the number of proofs is countably infinite

elementary-set-theory cardinals

The largest number system

elementary-set-theory cardinals number-systems