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| Mirrors > Home > ILE Home > Th. List > mulap0d | GIF version | ||
| Description: The product of two numbers apart from zero is apart from zero. (Contributed by Jim Kingdon, 23-Feb-2020.) |
| Ref | Expression |
|---|---|
| mulap0d.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
| mulap0d.2 | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
| mulap0d.3 | ⊢ (𝜑 → 𝐴 # 0) |
| mulap0d.4 | ⊢ (𝜑 → 𝐵 # 0) |
| Ref | Expression |
|---|---|
| mulap0d | ⊢ (𝜑 → (𝐴 · 𝐵) # 0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mulap0d.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
| 2 | mulap0d.3 | . 2 ⊢ (𝜑 → 𝐴 # 0) | |
| 3 | mulap0d.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
| 4 | mulap0d.4 | . 2 ⊢ (𝜑 → 𝐵 # 0) | |
| 5 | mulap0 8839 | . 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 # 0) ∧ (𝐵 ∈ ℂ ∧ 𝐵 # 0)) → (𝐴 · 𝐵) # 0) | |
| 6 | 1, 2, 3, 4, 5 | syl22anc 1274 | 1 ⊢ (𝜑 → (𝐴 · 𝐵) # 0) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∈ wcel 2201 class class class wbr 4089 (class class class)co 6023 ℂcc 8035 0cc0 8037 · cmul 8042 # cap 8766 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2203 ax-14 2204 ax-ext 2212 ax-sep 4208 ax-pow 4266 ax-pr 4301 ax-un 4532 ax-setind 4637 ax-cnex 8128 ax-resscn 8129 ax-1cn 8130 ax-1re 8131 ax-icn 8132 ax-addcl 8133 ax-addrcl 8134 ax-mulcl 8135 ax-mulrcl 8136 ax-addcom 8137 ax-mulcom 8138 ax-addass 8139 ax-mulass 8140 ax-distr 8141 ax-i2m1 8142 ax-0lt1 8143 ax-1rid 8144 ax-0id 8145 ax-rnegex 8146 ax-precex 8147 ax-cnre 8148 ax-pre-ltirr 8149 ax-pre-ltwlin 8150 ax-pre-lttrn 8151 ax-pre-apti 8152 ax-pre-ltadd 8153 ax-pre-mulgt0 8154 ax-pre-mulext 8155 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1810 df-eu 2081 df-mo 2082 df-clab 2217 df-cleq 2223 df-clel 2226 df-nfc 2362 df-ne 2402 df-nel 2497 df-ral 2514 df-rex 2515 df-reu 2516 df-rab 2518 df-v 2803 df-sbc 3031 df-dif 3201 df-un 3203 df-in 3205 df-ss 3212 df-pw 3655 df-sn 3676 df-pr 3677 df-op 3679 df-uni 3895 df-br 4090 df-opab 4152 df-id 4392 df-po 4395 df-iso 4396 df-xp 4733 df-rel 4734 df-cnv 4735 df-co 4736 df-dm 4737 df-iota 5288 df-fun 5330 df-fv 5336 df-riota 5976 df-ov 6026 df-oprab 6027 df-mpo 6028 df-pnf 8221 df-mnf 8222 df-xr 8223 df-ltxr 8224 df-le 8225 df-sub 8357 df-neg 8358 df-reap 8760 df-ap 8767 |
| This theorem is referenced by: divdivdivap 8898 modqmulnn 10610 exp3vallem 10808 mulexpzap 10847 absrpclap 11644 reccn2ap 11896 trireciplem 12084 prodfap0 12129 fprodap0 12205 fprodap0f 12220 efaddlem 12258 tanval3ap 12298 tanaddaplem 12322 tanaddap 12323 lcmcllem 12662 lcmgcdlem 12672 pcpremul 12889 pcmul 12897 pcqmul 12899 pcaddlem 12935 lgsdilem2 15794 lgsdi 15795 apdiff 16719 |
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