New posts in Ordinals

Why do we classify infinities in so many symbols and ideas?

There is no infinite descending chain of ordinals

"Subtracting" Ordinals - possible?

A transfinite epistemic logic puzzle: what numbers did Cheryl give to Albert and Bernard?

Ordinal exponentiation identity with natural sum of exponents

Why are all von Neumann ordinals contained in each other?

Cardinal Arithmetic versus Ordinal Arithmetic

Is there any countable ordinal number which has a member undefinable?

How to prove the Milner-Rado Paradox?

show that every continuous real-valued function defined on $S_{\mathbb{\Omega}}$ is eventually constant