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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 9835 nummac 9836 9t11e99 9921 decbin2 9932 irec 11096 binom2i 11105 3dec 11173 rei 11686 imi 11687 3dvdsdec 12656 3dvds2dec 12657 odd2np1 12664 3lcm2e6woprm 12888 6lcm4e12 12889 modxai 13223 mod2xnegi 13226 karatsuba 13238 ballotfilemth 13338 sinhalfpilem 16035 ef2pi 16049 ef2kpi 16050 efper 16051 sinperlem 16052 sin2kpi 16055 cos2kpi 16056 sin2pim 16057 cos2pim 16058 sincos4thpi 16084 sincos6thpi 16086 abssinper 16090 cosq34lt1 16095 root1idef 16101 efnthr 16193 log2ublem2 16239 log2ublem3 16240 log2ublog2 16241 bclbnd 16324 bposlem8 16335 bposlem9 16336 lgsdir2lem5 16373 2lgsoddprmlem3c 16450 2lgsoddprmlem3d 16451 |
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