New posts in Cardinals

The least universal cardinal has countable cofinality

Are there more rectangles than squares?

An application of the Pressing Down Lemma (Part 1)

How to show the cardinality $0$ is less than the cardinality $1$

Uncountably many functions coinciding only finitely many values

Regarding the Post: "Does $k+\aleph_0=\mathfrak{c}$ imply $k=\mathfrak{c}$ without the Axiom of Choice?"

Given a cardinal $\kappa$, what is the smallest cardinal $\lambda$ for which $2^{\lambda}\geq\kappa$?

What is the cardinality of the set of subgroups of $(\mathbb R, +)$?

Is $\aleph_{1}^{\aleph_0}<\aleph_{2}^{\aleph_0}$ equivalent to the Continuum Hypothesis?

Cardinality of $\aleph _0$