New posts in Set Theory

Infinite, totally ordered and well ordered sets

Uncountably many functions coinciding only finitely many values

"Categorical" Schröder–Bernstein theorem?

Examples of sets which are not obviously sets

Is a topological space considered to be a class in set theory?

On $\mathcal{A}$ with $\forall C\in\mathcal{P}_{\infty}(\mathbb{N})\exists A\in\mathcal{A}:A\cap C\in\mathcal{P}_{\infty}(\mathbb{N})$

What was the definition of "set" that resulted in Russell's paradox?

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

Peano's successor function

How to construct natural numbers by set theory?