Newbetuts

What's the difference between saying that there is no cardinal between $\aleph_0$ and $\aleph_1$ as opposed to saying that...

How does equality $\mathfrak{m}^\mathfrak{m} = 2^\mathfrak{m}$ in $\sf{ZF}$ relate to the axiom of choice?

A simple bijection between $\mathbb{R}$ and $\mathbb{R}^4$ or $\mathbb{R}^n$?

Is aleph-$0$ a natural number?

How to reach $\aleph_1$ without power sets?

Cardinality of a locally compact Hausdorff space without isolated points

Cardinality Of $n^{\aleph_0}$ for cardinals $n$ up to $\aleph_0$?

How many non-isomorphic abelian groups of order $\kappa$ are there for $\kappa$ infinite?

More numbers between $[0,1]$ or $[1,\infty)$?

Medial Limit of Mokobodzki (case of Banach Limit)

Arithmetics of cardinalities: if $|A|=|C|$ and $|B|=|D|$ then $|A\times B|=|D\times C|$

Is a limit ordinal necessarily a cardinal?

How many non-differentiable functions exist?

Ordinals that satisfy $\alpha = \aleph_\alpha$ with cofinality $\kappa$

"Real" cardinality, say, $\aleph_\pi$?

Does ZF prove that there are more cardinals than elements of any set?

What is the cardinality of countable union of infinite sets?

bound on the cardinality of the continuum? I hope not

New posts in cardinals

What is the cardinality of the set of all sequences in $\mathbb{R}$ converging to a real number?

A proper subset of a set $S$ is equinumerous to $S$. Is this a contradiction? [duplicate]

What's the difference between saying that there is no cardinal between $\aleph_0$ and $\aleph_1$ as opposed to saying that...

How does equality $\mathfrak{m}^\mathfrak{m} = 2^\mathfrak{m}$ in $\sf{ZF}$ relate to the axiom of choice?

A simple bijection between $\mathbb{R}$ and $\mathbb{R}^4$ or $\mathbb{R}^n$?

Is aleph-$0$ a natural number?

How to reach $\aleph_1$ without power sets?

Cardinality of a locally compact Hausdorff space without isolated points

Cardinality Of $n^{\aleph_0}$ for cardinals $n$ up to $\aleph_0$?

How many non-isomorphic abelian groups of order $\kappa$ are there for $\kappa$ infinite?

More numbers between $[0,1]$ or $[1,\infty)$?

Medial Limit of Mokobodzki (case of Banach Limit)

Arithmetics of cardinalities: if $|A|=|C|$ and $|B|=|D|$ then $|A\times B|=|D\times C|$

Is a limit ordinal necessarily a cardinal?

How many non-differentiable functions exist?

Ordinals that satisfy $\alpha = \aleph_\alpha$ with cofinality $\kappa$

"Real" cardinality, say, $\aleph_\pi$?

Does ZF prove that there are more cardinals than elements of any set?

What is the cardinality of countable union of infinite sets?

bound on the cardinality of the continuum? I hope not