Cardinal arithmetic- Problem 5.18 Jech's book
129813
Is there an easy proof for ${\aleph_\omega} ^ {\aleph_1} = {2}^{\aleph_1}\cdot{\aleph_\omega}^{\aleph_0}$?
6427
how many infinite cardinals are smaller than $\aleph$?
109764
Find the cardinality of the quotient of $\mathbb R$ in respect to R
153305
Adding subsets of regular cardinals (Jech p. 226)
156006
Cardinality of set containing all infinite subsets of $\mathbb{Q}$
45216
Cardinality of $[0,1]$
128634
Doubt related to a theorem in congruences of Chapter 5 of Apostol Introduction to analytic number theory
5840
divides, not divides and cardinalities
119549
Prove the even integers are countable (by explicitly giving a bijection $\mathbb{N} \to E$)
31318
Cardinality of cartesian square
9651
Cardinality of cartesian product of an infinite set with N
65768
What is the cardinality of the set of the empty set?
66301
The cardinality of the set of countably infinite subsets of an infinite set
127233
Cardinality of order types in $\mathbb{N}$
45218
Comparing the two cardinals $\aleph_0^{\aleph_0}$ and $2^{\aleph_0}$
117047
exponentiation of cardinal number
7785
Cardinality of sum-set