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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 2957 | . . . . 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 31652 | . . 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 31633 | . . . . 5 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐴 ·ℎ (𝐵 −ℎ 𝐶)) = ((𝐴 ·ℎ 𝐵) −ℎ (𝐴 ·ℎ 𝐶))) | |
| 9 | 8 | eqeq1d 2763 | . . . 4 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → ((𝐴 ·ℎ (𝐵 −ℎ 𝐶)) = 0ℎ ↔ ((𝐴 ·ℎ 𝐵) −ℎ (𝐴 ·ℎ 𝐶)) = 0ℎ)) |
| 10 | hvsubcl 31601 | . . . . . 6 ⊢ ((𝐵 ∈ ℋ ∧ 𝐶 ∈ ℋ) → (𝐵 −ℎ 𝐶) ∈ ℋ) | |
| 11 | hvmul0or 31609 | . . . . . 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 31597 | . . . . . 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 31597 | . . . . . 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 31652 | . . . . 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 1570 ∈ wcel 2145 ≠ wne 2956 (class class class)co 7412 ℂcc 11179 0cc0 11181 ℋchba 31503 ·ℎ csm 31505 0ℎc0v 31508 −ℎ cmv 31509 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7740 ax-resscn 11238 ax-1cn 11239 ax-icn 11240 ax-addcl 11241 ax-addrcl 11242 ax-mulcl 11243 ax-mulrcl 11244 ax-mulcom 11245 ax-addass 11246 ax-mulass 11247 ax-distr 11248 ax-i2m1 11249 ax-1ne0 11250 ax-1rid 11251 ax-rnegex 11252 ax-rrecex 11253 ax-cnre 11254 ax-pre-lttri 11255 ax-pre-lttrn 11256 ax-pre-ltadd 11257 ax-pre-mulgt0 11258 ax-hfvadd 31584 ax-hvcom 31585 ax-hvass 31586 ax-hv0cl 31587 ax-hvaddid 31588 ax-hfvmul 31589 ax-hvmulid 31590 ax-hvmulass 31591 ax-hvdistr1 31592 ax-hvdistr2 31593 ax-hvmul0 31594 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-po 5559 df-so 5560 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6487 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-riota 7369 df-ov 7415 df-oprab 7416 df-mpo 7417 df-er 8701 df-en 8958 df-dom 8959 df-sdom 8960 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 df-le 11330 df-sub 11524 df-neg 11525 df-div 11955 df-hvsub 31555 |
| This theorem is used by: hvsubcan 31658 hvsubcan2 31659 |
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