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| Mirrors > Home > ILE Home > Th. List > mulcli | GIF version | ||
| Description: Closure law for multiplication. (Contributed by NM, 23-Nov-1994.) |
| Ref | Expression |
|---|---|
| axi.1 | ⊢ 𝐴 ∈ ℂ |
| axi.2 | ⊢ 𝐵 ∈ ℂ |
| Ref | Expression |
|---|---|
| mulcli | ⊢ (𝐴 · 𝐵) ∈ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | axi.1 | . 2 ⊢ 𝐴 ∈ ℂ | |
| 2 | axi.2 | . 2 ⊢ 𝐵 ∈ ℂ | |
| 3 | mulcl 8312 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 · 𝐵) ∈ ℂ) | |
| 4 | 1, 2, 3 | mp2an 430 | 1 ⊢ (𝐴 · 𝐵) ∈ ℂ |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: ∈ wcel 2209 (class class class)co 6088 ℂcc 8183 · cmul 8190 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia3 108 ax-mulcl 8283 |
| This theorem is used by: ixi 8919 2mulicn 9538 numma 9836 nummac 9837 9t11e99 9922 decbin2 9933 irec 11097 binom2i 11106 3dec 11174 rei 11687 imi 11688 3dvdsdec 12657 3dvds2dec 12658 odd2np1 12665 3lcm2e6woprm 12889 6lcm4e12 12890 modxai 13224 mod2xnegi 13227 karatsuba 13239 ballotfilemth 13339 sinhalfpilem 16018 ef2pi 16032 ef2kpi 16033 efper 16034 sinperlem 16035 sin2kpi 16038 cos2kpi 16039 sin2pim 16040 cos2pim 16041 sincos4thpi 16067 sincos6thpi 16069 abssinper 16073 cosq34lt1 16078 root1idef 16084 efnthr 16176 log2ublem2 16222 log2ublem3 16223 log2ublog2 16224 bclbnd 16307 bposlem8 16318 bposlem9 16319 lgsdir2lem5 16356 2lgsoddprmlem3c 16433 2lgsoddprmlem3d 16434 |
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