Show that the set $ [-1, \infty )$ has cardinality $ c \ \ $
10458
How to define a bijection between $(0,1)$ and $(0,1]$?
61640
Prove c exists for f:[0,1] -> R
71967
cardinality of the set of $ \varphi: \mathbb N \to \mathbb N$ such that $\varphi$ is an increasing sequence
103717
Topological Property of the Set of Integers
105425
The intervals $(2,4)$ and $(-1,17)$ have the same cardinality
23442
Cardinality of the union of infinite and countable sets
104744
Can sets of cardinality $\aleph_1$ have nonzero measure?
104274
Express $C$ interms of the sets $A_n$
68230
The cardinality of a countable union of sets with less than continuum cardinality
122947
What is the cardinality of the set of infinite cardinalities?
81509
The cardinality of a countable union of countable sets, without the axiom of choice
15733
Show that the cardinality of $\mathbb N$ is the same as the cardinality of $\mathbb N \times \mathbb N$
92588
Showing that $(C_0([0,\infty)), \|\cdot\|_\infty)$ is complete.
7785
Cardinality of sum-set
86914
Cardinality of the set of hyperreal numbers
13398
Prove that the interval $(0, 1)$ and the Cartesian product $(0, 1) \times (0, 1)$ have the same cardinality
114770
Proof that a perfect set is uncountable