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| Mirrors > Home > HSE Home > Th. List > hisubcomi | Structured version Visualization version GIF version | ||
| Description: Two vector subtractions simultaneously commute in an inner product. (Contributed by NM, 1-Jul-2005.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| hisubcom.1 | ⊢ 𝐴 ∈ ℋ |
| hisubcom.2 | ⊢ 𝐵 ∈ ℋ |
| hisubcom.3 | ⊢ 𝐶 ∈ ℋ |
| hisubcom.4 | ⊢ 𝐷 ∈ ℋ |
| Ref | Expression |
|---|---|
| hisubcomi | ⊢ ((𝐴 −ℎ 𝐵) ·ih (𝐶 −ℎ 𝐷)) = ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | hisubcom.2 | . . . 4 ⊢ 𝐵 ∈ ℋ | |
| 2 | hisubcom.1 | . . . 4 ⊢ 𝐴 ∈ ℋ | |
| 3 | 1, 2 | hvnegdii 31148 | . . 3 ⊢ (-1 ·ℎ (𝐵 −ℎ 𝐴)) = (𝐴 −ℎ 𝐵) |
| 4 | hisubcom.4 | . . . 4 ⊢ 𝐷 ∈ ℋ | |
| 5 | hisubcom.3 | . . . 4 ⊢ 𝐶 ∈ ℋ | |
| 6 | 4, 5 | hvnegdii 31148 | . . 3 ⊢ (-1 ·ℎ (𝐷 −ℎ 𝐶)) = (𝐶 −ℎ 𝐷) |
| 7 | 3, 6 | oveq12i 7372 | . 2 ⊢ ((-1 ·ℎ (𝐵 −ℎ 𝐴)) ·ih (-1 ·ℎ (𝐷 −ℎ 𝐶))) = ((𝐴 −ℎ 𝐵) ·ih (𝐶 −ℎ 𝐷)) |
| 8 | neg1cn 12135 | . . . 4 ⊢ -1 ∈ ℂ | |
| 9 | 1, 2 | hvsubcli 31107 | . . . 4 ⊢ (𝐵 −ℎ 𝐴) ∈ ℋ |
| 10 | 4, 5 | hvsubcli 31107 | . . . 4 ⊢ (𝐷 −ℎ 𝐶) ∈ ℋ |
| 11 | 8, 8, 9, 10 | his35i 31175 | . . 3 ⊢ ((-1 ·ℎ (𝐵 −ℎ 𝐴)) ·ih (-1 ·ℎ (𝐷 −ℎ 𝐶))) = ((-1 · (∗‘-1)) · ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶))) |
| 12 | neg1rr 12136 | . . . . . . 7 ⊢ -1 ∈ ℝ | |
| 13 | cjre 15092 | . . . . . . 7 ⊢ (-1 ∈ ℝ → (∗‘-1) = -1) | |
| 14 | 12, 13 | ax-mp 5 | . . . . . 6 ⊢ (∗‘-1) = -1 |
| 15 | 14 | oveq2i 7371 | . . . . 5 ⊢ (-1 · (∗‘-1)) = (-1 · -1) |
| 16 | ax-1cn 11087 | . . . . . 6 ⊢ 1 ∈ ℂ | |
| 17 | 16, 16 | mul2negi 11589 | . . . . 5 ⊢ (-1 · -1) = (1 · 1) |
| 18 | 1t1e1 12329 | . . . . 5 ⊢ (1 · 1) = 1 | |
| 19 | 15, 17, 18 | 3eqtri 2764 | . . . 4 ⊢ (-1 · (∗‘-1)) = 1 |
| 20 | 19 | oveq1i 7370 | . . 3 ⊢ ((-1 · (∗‘-1)) · ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶))) = (1 · ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶))) |
| 21 | 9, 10 | hicli 31167 | . . . 4 ⊢ ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) ∈ ℂ |
| 22 | 21 | mullidi 11141 | . . 3 ⊢ (1 · ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶))) = ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) |
| 23 | 11, 20, 22 | 3eqtri 2764 | . 2 ⊢ ((-1 ·ℎ (𝐵 −ℎ 𝐴)) ·ih (-1 ·ℎ (𝐷 −ℎ 𝐶))) = ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) |
| 24 | 7, 23 | eqtr3i 2762 | 1 ⊢ ((𝐴 −ℎ 𝐵) ·ih (𝐶 −ℎ 𝐷)) = ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1542 ∈ wcel 2114 ‘cfv 6492 (class class class)co 7360 ℝcr 11028 1c1 11030 · cmul 11034 -cneg 11369 ∗ccj 15049 ℋchba 31005 ·ℎ csm 31007 ·ih csp 31008 −ℎ cmv 31011 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-nul 5241 ax-pow 5302 ax-pr 5370 ax-un 7682 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-addrcl 11090 ax-mulcl 11091 ax-mulrcl 11092 ax-mulcom 11093 ax-addass 11094 ax-mulass 11095 ax-distr 11096 ax-i2m1 11097 ax-1ne0 11098 ax-1rid 11099 ax-rnegex 11100 ax-rrecex 11101 ax-cnre 11102 ax-pre-lttri 11103 ax-pre-lttrn 11104 ax-pre-ltadd 11105 ax-pre-mulgt0 11106 ax-hfvadd 31086 ax-hvcom 31087 ax-hfvmul 31091 ax-hvmulid 31092 ax-hvmulass 31093 ax-hvdistr1 31094 ax-hfi 31165 ax-his1 31168 ax-his3 31170 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3343 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5519 df-eprel 5524 df-po 5532 df-so 5533 df-fr 5577 df-we 5579 df-xp 5630 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-res 5636 df-ima 5637 df-pred 6259 df-ord 6320 df-on 6321 df-lim 6322 df-suc 6323 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 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-2nd 7936 df-frecs 8224 df-wrecs 8255 df-recs 8304 df-rdg 8342 df-er 8636 df-en 8887 df-dom 8888 df-sdom 8889 df-pnf 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-div 11799 df-nn 12166 df-2 12235 df-cj 15052 df-re 15053 df-im 15054 df-hvsub 31057 |
| This theorem is referenced by: lnophmlem2 32103 |
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