Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > mulne0bd | Structured version Visualization version GIF version |
Description: The product of two nonzero numbers is nonzero. (Contributed by Mario Carneiro, 27-May-2016.) |
Ref | Expression |
---|---|
msq0d.1 | ⊢ (𝜑 → 𝐴 ∈ ℂ) |
mul0ord.2 | ⊢ (𝜑 → 𝐵 ∈ ℂ) |
Ref | Expression |
---|---|
mulne0bd | ⊢ (𝜑 → ((𝐴 ≠ 0 ∧ 𝐵 ≠ 0) ↔ (𝐴 · 𝐵) ≠ 0)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | msq0d.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℂ) | |
2 | mul0ord.2 | . 2 ⊢ (𝜑 → 𝐵 ∈ ℂ) | |
3 | mulne0b 11521 | . 2 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → ((𝐴 ≠ 0 ∧ 𝐵 ≠ 0) ↔ (𝐴 · 𝐵) ≠ 0)) | |
4 | 1, 2, 3 | syl2anc 587 | 1 ⊢ (𝜑 → ((𝐴 ≠ 0 ∧ 𝐵 ≠ 0) ↔ (𝐴 · 𝐵) ≠ 0)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 ∈ wcel 2112 ≠ wne 2943 (class class class)co 7252 ℂcc 10775 0cc0 10777 · cmul 10782 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2710 ax-sep 5216 ax-nul 5223 ax-pow 5282 ax-pr 5346 ax-un 7563 ax-resscn 10834 ax-1cn 10835 ax-icn 10836 ax-addcl 10837 ax-addrcl 10838 ax-mulcl 10839 ax-mulrcl 10840 ax-mulcom 10841 ax-addass 10842 ax-mulass 10843 ax-distr 10844 ax-i2m1 10845 ax-1ne0 10846 ax-1rid 10847 ax-rnegex 10848 ax-rrecex 10849 ax-cnre 10850 ax-pre-lttri 10851 ax-pre-lttrn 10852 ax-pre-ltadd 10853 ax-pre-mulgt0 10854 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2541 df-eu 2570 df-clab 2717 df-cleq 2731 df-clel 2818 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-reu 3071 df-rab 3073 df-v 3425 df-sbc 3713 df-csb 3830 df-dif 3887 df-un 3889 df-in 3891 df-ss 3901 df-nul 4255 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4837 df-br 5071 df-opab 5133 df-mpt 5153 df-id 5479 df-po 5493 df-so 5494 df-xp 5585 df-rel 5586 df-cnv 5587 df-co 5588 df-dm 5589 df-rn 5590 df-res 5591 df-ima 5592 df-iota 6373 df-fun 6417 df-fn 6418 df-f 6419 df-f1 6420 df-fo 6421 df-f1o 6422 df-fv 6423 df-riota 7209 df-ov 7255 df-oprab 7256 df-mpo 7257 df-er 8433 df-en 8669 df-dom 8670 df-sdom 8671 df-pnf 10917 df-mnf 10918 df-xr 10919 df-ltxr 10920 df-le 10921 df-sub 11112 df-neg 11113 |
This theorem is referenced by: mulne0d 11532 mulne0bad 11535 mulne0bbd 11536 dchrmulcl 26277 lgsne0 26363 |
Copyright terms: Public domain | W3C validator |