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Mirrors > Home > MPE Home > Th. List > 3z | Structured version Visualization version GIF version |
Description: 3 is an integer. (Contributed by David A. Wheeler, 8-Dec-2018.) |
Ref | Expression |
---|---|
3z | ⊢ 3 ∈ ℤ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3nn 11982 | . 2 ⊢ 3 ∈ ℕ | |
2 | 1 | nnzi 12274 | 1 ⊢ 3 ∈ ℤ |
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