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| Mirrors > Home > HSE Home > Th. List > hvaddsubval | Structured version Visualization version GIF version | ||
| Description: Value of vector addition in terms of vector subtraction. (Contributed by NM, 10-Jun-2006.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| hvaddsubval | ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (𝐴 +ℎ 𝐵) = (𝐴 −ℎ (-1 ·ℎ 𝐵))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | neg1cn 12221 | . . . 4 ⊢ -1 ∈ ℂ | |
| 2 | hvmulcl 31402 | . . . 4 ⊢ ((-1 ∈ ℂ ∧ 𝐵 ∈ ℋ) → (-1 ·ℎ 𝐵) ∈ ℋ) | |
| 3 | 1, 2 | mpan 703 | . . 3 ⊢ (𝐵 ∈ ℋ → (-1 ·ℎ 𝐵) ∈ ℋ) |
| 4 | hvsubval 31405 | . . 3 ⊢ ((𝐴 ∈ ℋ ∧ (-1 ·ℎ 𝐵) ∈ ℋ) → (𝐴 −ℎ (-1 ·ℎ 𝐵)) = (𝐴 +ℎ (-1 ·ℎ (-1 ·ℎ 𝐵)))) | |
| 5 | 3, 4 | sylan2 605 | . 2 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (𝐴 −ℎ (-1 ·ℎ 𝐵)) = (𝐴 +ℎ (-1 ·ℎ (-1 ·ℎ 𝐵)))) |
| 6 | hvm1neg 31421 | . . . . . . 7 ⊢ ((-1 ∈ ℂ ∧ 𝐵 ∈ ℋ) → (-1 ·ℎ (-1 ·ℎ 𝐵)) = (--1 ·ℎ 𝐵)) | |
| 7 | 1, 6 | mpan 703 | . . . . . 6 ⊢ (𝐵 ∈ ℋ → (-1 ·ℎ (-1 ·ℎ 𝐵)) = (--1 ·ℎ 𝐵)) |
| 8 | negneg1e1 12225 | . . . . . . 7 ⊢ --1 = 1 | |
| 9 | 8 | oveq1i 7433 | . . . . . 6 ⊢ (--1 ·ℎ 𝐵) = (1 ·ℎ 𝐵) |
| 10 | 7, 9 | eqtrdi 2817 | . . . . 5 ⊢ (𝐵 ∈ ℋ → (-1 ·ℎ (-1 ·ℎ 𝐵)) = (1 ·ℎ 𝐵)) |
| 11 | ax-hvmulid 31395 | . . . . 5 ⊢ (𝐵 ∈ ℋ → (1 ·ℎ 𝐵) = 𝐵) | |
| 12 | 10, 11 | eqtrd 2801 | . . . 4 ⊢ (𝐵 ∈ ℋ → (-1 ·ℎ (-1 ·ℎ 𝐵)) = 𝐵) |
| 13 | 12 | adantl 487 | . . 3 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (-1 ·ℎ (-1 ·ℎ 𝐵)) = 𝐵) |
| 14 | 13 | oveq2d 7439 | . 2 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (𝐴 +ℎ (-1 ·ℎ (-1 ·ℎ 𝐵))) = (𝐴 +ℎ 𝐵)) |
| 15 | 5, 14 | eqtr2d 2802 | 1 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (𝐴 +ℎ 𝐵) = (𝐴 −ℎ (-1 ·ℎ 𝐵))) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1570 ∈ wcel 2146 (class class class)co 7423 ℂcc 11116 1c1 11119 -cneg 11460 ℋchba 31308 +ℎ cva 31309 ·ℎ csm 31310 −ℎ cmv 31314 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-nul 5274 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-resscn 11175 ax-1cn 11176 ax-icn 11177 ax-addcl 11178 ax-addrcl 11179 ax-mulcl 11180 ax-mulrcl 11181 ax-mulcom 11182 ax-addass 11183 ax-mulass 11184 ax-distr 11185 ax-i2m1 11186 ax-1ne0 11187 ax-1rid 11188 ax-rnegex 11189 ax-rrecex 11190 ax-cnre 11191 ax-pre-lttri 11192 ax-pre-lttrn 11193 ax-pre-ltadd 11194 ax-hfvmul 31394 ax-hvmulid 31395 ax-hvmulass 31396 |
| 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 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-nel 3068 df-ral 3083 df-rex 3093 df-reu 3373 df-rab 3420 df-v 3460 df-sbc 3748 df-csb 3857 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-iun 4963 df-br 5115 df-opab 5179 df-mpt 5198 df-id 5561 df-po 5574 df-so 5575 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-res 5678 df-ima 5679 df-iota 6499 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7380 df-ov 7426 df-oprab 7427 df-mpo 7428 df-er 8703 df-en 8953 df-dom 8954 df-sdom 8955 df-pnf 11263 df-mnf 11264 df-ltxr 11266 df-sub 11461 df-neg 11462 df-hvsub 31360 |
| This theorem is used by: hvaddeq0 31458 shsel3 31704 |
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