Description: The set of integer numbers is equinumerous to omega (the set of finite ordinal numbers). (Contributed by Glauco Siliprandi, 17-Aug-2020)
Ref | Expression | ||
---|---|---|---|
Assertion | zenom | |- ZZ ~~ _om |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | znnen | |- ZZ ~~ NN |
|
2 | nnenom | |- NN ~~ _om |
|
3 | 1 2 | entri | |- ZZ ~~ _om |