Description: The multiplication operation is a set. (Contributed by NM, 19-Oct-2004) (Revised by Mario Carneiro, 17-Nov-2014)
Ref | Expression | ||
---|---|---|---|
Assertion | mulex | ⊢ · ∈ V |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-mulf | ⊢ · : ( ℂ × ℂ ) ⟶ ℂ | |
2 | cnex | ⊢ ℂ ∈ V | |
3 | 2 2 | xpex | ⊢ ( ℂ × ℂ ) ∈ V |
4 | fex2 | ⊢ ( ( · : ( ℂ × ℂ ) ⟶ ℂ ∧ ( ℂ × ℂ ) ∈ V ∧ ℂ ∈ V ) → · ∈ V ) | |
5 | 1 3 2 4 | mp3an | ⊢ · ∈ V |