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| Mirrors > Home > HSE Home > Th. List > hvmulcan | Structured version Visualization version GIF version | ||
| Description: Cancellation law for scalar multiplication. (Contributed by NM, 19-May-2005.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| hvmulcan | ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((𝐴 ·ℎ 𝐵) = (𝐴 ·ℎ 𝐶) ↔ 𝐵 = 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-ne 2956 | . . . . 5 ⊢ (𝐴 ≠ 0 ↔ ¬ 𝐴 = 0) | |
| 2 | biorf 950 | . . . . 5 ⊢ (¬ 𝐴 = 0 → ((𝐵 −ℎ 𝐶) = 0ℎ ↔ (𝐴 = 0 ∨ (𝐵 −ℎ 𝐶) = 0ℎ))) | |
| 3 | 1, 2 | sylbi 220 | . . . 4 ⊢ (𝐴 ≠ 0 → ((𝐵 −ℎ 𝐶) = 0ℎ ↔ (𝐴 = 0 ∨ (𝐵 −ℎ 𝐶) = 0ℎ))) |
| 4 | 3 | ad2antlr 740 | . . 3 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) ∧ 𝐵 ∈ ℋ) → ((𝐵 −ℎ 𝐶) = 0ℎ ↔ (𝐴 = 0 ∨ (𝐵 −ℎ 𝐶) = 0ℎ))) |
| 5 | 4 | 3adant3 1150 | . 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((𝐵 −ℎ 𝐶) = 0ℎ ↔ (𝐴 = 0 ∨ (𝐵 −ℎ 𝐶) = 0ℎ))) |
| 6 | hvsubeq0 31676 | . . 3 ⊢ ((𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((𝐵 −ℎ 𝐶) = 0ℎ ↔ 𝐵 = 𝐶)) | |
| 7 | 6 | 3adant1 1148 | . 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((𝐵 −ℎ 𝐶) = 0ℎ ↔ 𝐵 = 𝐶)) |
| 8 | hvsubdistr1 31657 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐴 ·ℎ (𝐵 −ℎ 𝐶)) = ((𝐴 ·ℎ 𝐵) −ℎ (𝐴 ·ℎ 𝐶))) | |
| 9 | 8 | eqeq1d 2762 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((𝐴 ·ℎ (𝐵 −ℎ 𝐶)) = 0ℎ ↔ ((𝐴 ·ℎ 𝐵) −ℎ (𝐴 ·ℎ 𝐶)) = 0ℎ)) |
| 10 | hvsubcl 31625 | . . . . . 6 ⊢ ((𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐵 −ℎ 𝐶) ∈ ℋ) | |
| 11 | hvmul0or 31633 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 −ℎ 𝐶) ∈ ℋ) → ((𝐴 ·ℎ (𝐵 −ℎ 𝐶)) = 0ℎ ↔ (𝐴 = 0 ∨ (𝐵 −ℎ 𝐶) = 0ℎ))) | |
| 12 | 10, 11 | sylan2 605 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ (𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ)) → ((𝐴 ·ℎ (𝐵 −ℎ 𝐶)) = 0ℎ ↔ (𝐴 = 0 ∨ (𝐵 −ℎ 𝐶) = 0ℎ))) |
| 13 | 12 | 3impb 1132 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((𝐴 ·ℎ (𝐵 −ℎ 𝐶)) = 0ℎ ↔ (𝐴 = 0 ∨ (𝐵 −ℎ 𝐶) = 0ℎ))) |
| 14 | hvmulcl 31621 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℋ) → (𝐴 ·ℎ 𝐵) ∈ ℋ) | |
| 15 | 14 | 3adant3 1150 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐴 ·ℎ 𝐵) ∈ ℋ) |
| 16 | hvmulcl 31621 | . . . . . 6 ⊢ ((𝐴 ∈ ℂ ∧ 𝐶 ∈ ℋ) → (𝐴 ·ℎ 𝐶) ∈ ℋ) | |
| 17 | 16 | 3adant2 1149 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐴 ·ℎ 𝐶) ∈ ℋ) |
| 18 | hvsubeq0 31676 | . . . . 5 ⊢ (((𝐴 ·ℎ 𝐵) ∈ ℋ ∧ (𝐴 ·ℎ 𝐶) ∈ ℋ) → (((𝐴 ·ℎ 𝐵) −ℎ (𝐴 ·ℎ 𝐶)) = 0ℎ ↔ (𝐴 ·ℎ 𝐵) = (𝐴 ·ℎ 𝐶))) | |
| 19 | 15, 17, 18 | syl2anc 596 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (((𝐴 ·ℎ 𝐵) −ℎ (𝐴 ·ℎ 𝐶)) = 0ℎ ↔ (𝐴 ·ℎ 𝐵) = (𝐴 ·ℎ 𝐶))) |
| 20 | 9, 13, 19 | 3bitr3d 312 | . . 3 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((𝐴 = 0 ∨ (𝐵 −ℎ 𝐶) = 0ℎ) ↔ (𝐴 ·ℎ 𝐵) = (𝐴 ·ℎ 𝐶))) |
| 21 | 20 | 3adant1r 1196 | . 2 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((𝐴 = 0 ∨ (𝐵 −ℎ 𝐶) = 0ℎ) ↔ (𝐴 ·ℎ 𝐵) = (𝐴 ·ℎ 𝐶))) |
| 22 | 5, 7, 21 | 3bitr3rd 313 | 1 ⊢ (((𝐴 ∈ ℂ ∧ 𝐴 ≠ 0) ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((𝐴 ·ℎ 𝐵) = (𝐴 ·ℎ 𝐶) ↔ 𝐵 = 𝐶)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 ∨ wo 861 ∧ w3a 1103 = wceq 1569 ∈ wcel 2144 ≠ wne 2955 (class class class)co 7421 ℂcc 11202 0cc0 11204 ℋchba 31527 ·ℎ csm 31529 0ℎc0v 31532 −ℎ cmv 31533 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7752 ax-resscn 11261 ax-1cn 11262 ax-icn 11263 ax-addcl 11264 ax-addrcl 11265 ax-mulcl 11266 ax-mulrcl 11267 ax-mulcom 11268 ax-addass 11269 ax-mulass 11270 ax-distr 11271 ax-i2m1 11272 ax-1ne0 11273 ax-1rid 11274 ax-rnegex 11275 ax-rrecex 11276 ax-cnre 11277 ax-pre-lttri 11278 ax-pre-lttrn 11279 ax-pre-ltadd 11280 ax-pre-mulgt0 11281 ax-hfvadd 31608 ax-hvcom 31609 ax-hvass 31610 ax-hv0cl 31611 ax-hvaddid 31612 ax-hfvmul 31613 ax-hvmulid 31614 ax-hvmulass 31615 ax-hvdistr1 31616 ax-hvdistr2 31617 ax-hvmul0 31618 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rmo 3365 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3739 df-csb 3847 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-iun 4952 df-br 5103 df-opab 5167 df-mpt 5186 df-id 5545 df-po 5558 df-so 5559 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-iota 6494 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-riota 7378 df-ov 7424 df-oprab 7425 df-mpo 7426 df-er 8721 df-en 8978 df-dom 8979 df-sdom 8980 df-pnf 11349 df-mnf 11350 df-xr 11351 df-ltxr 11352 df-le 11353 df-sub 11547 df-neg 11548 df-div 11978 df-hvsub 31579 |
| This theorem is used by: hvsubcan 31682 hvsubcan2 31683 |
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