Why cardinalities inequality defined that way?
58602
In ZF, how would the structure of the cardinal numbers change by adopting this definition of cardinality?
152382
Can an infinite set A be larger than an infinite set B but still have the same cardinality?
114736
What does 1 with an inequality in the subscript mean?
17987
Which of the following sets has the greatest cardinality?(Math subject GRE exam 0568 Q.61 )
133082
In Peano arithmetic, can we define inequality using successor?
96845
Question: Compare the cardinality between the sets $\Bbb R$ and $\Bbb N^{\Bbb N}$
52880
Intuition: If $a\leq b+\epsilon$ for all $\epsilon>0$ then $a\leq b$?
117047
exponentiation of cardinal number
150064
Cardinality of "$x-y\in\Bbb Q$"-equivalence class of $1/\sqrt2$
39880
Cardinality of Orderings of $\mathbb{R}$
109070
Question about the proof of the distributive property for sets
142631
Show that A has the same cardinality as $A\setminus\{x,y,z\}$
15733
Show that the cardinality of $\mathbb N$ is the same as the cardinality of $\mathbb N \times \mathbb N$
89167
Cardinality of equivalence relations in $\mathbb{N}$
79974
The cardinality of Lebesgue sets
111954
Computing the cardinality of a combinatorial set
32081
The dual version of trichotomy of cardinality without AC