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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 12142 | . . . 4 ⊢ -1 ∈ ℂ | |
| 2 | hvmulcl 31109 | . . . 4 ⊢ ((-1 ∈ ℂ ∧ 𝐵 ∈ ℋ) → (-1 ·ℎ 𝐵) ∈ ℋ) | |
| 3 | 1, 2 | mpan 696 | . . 3 ⊢ (𝐵 ∈ ℋ → (-1 ·ℎ 𝐵) ∈ ℋ) |
| 4 | hvsubval 31112 | . . 3 ⊢ ((𝐴 ∈ ℋ ∧ (-1 ·ℎ 𝐵) ∈ ℋ) → (𝐴 −ℎ (-1 ·ℎ 𝐵)) = (𝐴 +ℎ (-1 ·ℎ (-1 ·ℎ 𝐵)))) | |
| 5 | 3, 4 | sylan2 599 | . 2 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (𝐴 −ℎ (-1 ·ℎ 𝐵)) = (𝐴 +ℎ (-1 ·ℎ (-1 ·ℎ 𝐵)))) |
| 6 | hvm1neg 31128 | . . . . . . 7 ⊢ ((-1 ∈ ℂ ∧ 𝐵 ∈ ℋ) → (-1 ·ℎ (-1 ·ℎ 𝐵)) = (--1 ·ℎ 𝐵)) | |
| 7 | 1, 6 | mpan 696 | . . . . . 6 ⊢ (𝐵 ∈ ℋ → (-1 ·ℎ (-1 ·ℎ 𝐵)) = (--1 ·ℎ 𝐵)) |
| 8 | negneg1e1 12146 | . . . . . . 7 ⊢ --1 = 1 | |
| 9 | 8 | oveq1i 7373 | . . . . . 6 ⊢ (--1 ·ℎ 𝐵) = (1 ·ℎ 𝐵) |
| 10 | 7, 9 | eqtrdi 2791 | . . . . 5 ⊢ (𝐵 ∈ ℋ → (-1 ·ℎ (-1 ·ℎ 𝐵)) = (1 ·ℎ 𝐵)) |
| 11 | ax-hvmulid 31102 | . . . . 5 ⊢ (𝐵 ∈ ℋ → (1 ·ℎ 𝐵) = 𝐵) | |
| 12 | 10, 11 | eqtrd 2775 | . . . 4 ⊢ (𝐵 ∈ ℋ → (-1 ·ℎ (-1 ·ℎ 𝐵)) = 𝐵) |
| 13 | 12 | adantl 482 | . . 3 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (-1 ·ℎ (-1 ·ℎ 𝐵)) = 𝐵) |
| 14 | 13 | oveq2d 7379 | . 2 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (𝐴 +ℎ (-1 ·ℎ (-1 ·ℎ 𝐵))) = (𝐴 +ℎ 𝐵)) |
| 15 | 5, 14 | eqtr2d 2776 | 1 ⊢ ((𝐴 ∈ ℋ ∧ 𝐵 ∈ ℋ) → (𝐴 +ℎ 𝐵) = (𝐴 −ℎ (-1 ·ℎ 𝐵))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 = wceq 1547 ∈ wcel 2119 (class class class)co 7363 ℂcc 11034 1c1 11037 -cneg 11376 ℋchba 31015 +ℎ cva 31016 ·ℎ csm 31017 −ℎ cmv 31021 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-sep 5225 ax-nul 5235 ax-pow 5301 ax-pr 5369 ax-un 7685 ax-resscn 11093 ax-1cn 11094 ax-icn 11095 ax-addcl 11096 ax-addrcl 11097 ax-mulcl 11098 ax-mulrcl 11099 ax-mulcom 11100 ax-addass 11101 ax-mulass 11102 ax-distr 11103 ax-i2m1 11104 ax-1ne0 11105 ax-1rid 11106 ax-rnegex 11107 ax-rrecex 11108 ax-cnre 11109 ax-pre-lttri 11110 ax-pre-lttrn 11111 ax-pre-ltadd 11112 ax-hfvmul 31101 ax-hvmulid 31102 ax-hvmulass 31103 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-nel 3040 df-ral 3055 df-rex 3065 df-reu 3346 df-rab 3393 df-v 3434 df-sbc 3731 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4269 df-if 4462 df-pw 4538 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-iun 4930 df-br 5080 df-opab 5142 df-mpt 5161 df-id 5520 df-po 5533 df-so 5534 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-iota 6448 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-fv 6500 df-riota 7320 df-ov 7366 df-oprab 7367 df-mpo 7368 df-er 8640 df-en 8891 df-dom 8892 df-sdom 8893 df-pnf 11179 df-mnf 11180 df-ltxr 11182 df-sub 11377 df-neg 11378 df-hvsub 31067 |
| This theorem is referenced by: hvaddeq0 31165 shsel3 31411 |
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