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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 31034 | . . 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 31034 | . . 3 ⊢ (-1 ·ℎ (𝐷 −ℎ 𝐶)) = (𝐶 −ℎ 𝐷) |
| 7 | 3, 6 | oveq12i 7353 | . 2 ⊢ ((-1 ·ℎ (𝐵 −ℎ 𝐴)) ·ih (-1 ·ℎ (𝐷 −ℎ 𝐶))) = ((𝐴 −ℎ 𝐵) ·ih (𝐶 −ℎ 𝐷)) |
| 8 | neg1cn 12105 | . . . 4 ⊢ -1 ∈ ℂ | |
| 9 | 1, 2 | hvsubcli 30993 | . . . 4 ⊢ (𝐵 −ℎ 𝐴) ∈ ℋ |
| 10 | 4, 5 | hvsubcli 30993 | . . . 4 ⊢ (𝐷 −ℎ 𝐶) ∈ ℋ |
| 11 | 8, 8, 9, 10 | his35i 31061 | . . 3 ⊢ ((-1 ·ℎ (𝐵 −ℎ 𝐴)) ·ih (-1 ·ℎ (𝐷 −ℎ 𝐶))) = ((-1 · (∗‘-1)) · ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶))) |
| 12 | neg1rr 12106 | . . . . . . 7 ⊢ -1 ∈ ℝ | |
| 13 | cjre 15041 | . . . . . . 7 ⊢ (-1 ∈ ℝ → (∗‘-1) = -1) | |
| 14 | 12, 13 | ax-mp 5 | . . . . . 6 ⊢ (∗‘-1) = -1 |
| 15 | 14 | oveq2i 7352 | . . . . 5 ⊢ (-1 · (∗‘-1)) = (-1 · -1) |
| 16 | ax-1cn 11059 | . . . . . 6 ⊢ 1 ∈ ℂ | |
| 17 | 16, 16 | mul2negi 11560 | . . . . 5 ⊢ (-1 · -1) = (1 · 1) |
| 18 | 1t1e1 12277 | . . . . 5 ⊢ (1 · 1) = 1 | |
| 19 | 15, 17, 18 | 3eqtri 2758 | . . . 4 ⊢ (-1 · (∗‘-1)) = 1 |
| 20 | 19 | oveq1i 7351 | . . 3 ⊢ ((-1 · (∗‘-1)) · ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶))) = (1 · ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶))) |
| 21 | 9, 10 | hicli 31053 | . . . 4 ⊢ ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) ∈ ℂ |
| 22 | 21 | mullidi 11112 | . . 3 ⊢ (1 · ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶))) = ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) |
| 23 | 11, 20, 22 | 3eqtri 2758 | . 2 ⊢ ((-1 ·ℎ (𝐵 −ℎ 𝐴)) ·ih (-1 ·ℎ (𝐷 −ℎ 𝐶))) = ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) |
| 24 | 7, 23 | eqtr3i 2756 | 1 ⊢ ((𝐴 −ℎ 𝐵) ·ih (𝐶 −ℎ 𝐷)) = ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1541 ∈ wcel 2111 ‘cfv 6476 (class class class)co 7341 ℝcr 11000 1c1 11002 · cmul 11006 -cneg 11340 ∗ccj 14998 ℋchba 30891 ·ℎ csm 30893 ·ih csp 30894 −ℎ cmv 30897 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-10 2144 ax-11 2160 ax-12 2180 ax-ext 2703 ax-sep 5229 ax-nul 5239 ax-pow 5298 ax-pr 5365 ax-un 7663 ax-resscn 11058 ax-1cn 11059 ax-icn 11060 ax-addcl 11061 ax-addrcl 11062 ax-mulcl 11063 ax-mulrcl 11064 ax-mulcom 11065 ax-addass 11066 ax-mulass 11067 ax-distr 11068 ax-i2m1 11069 ax-1ne0 11070 ax-1rid 11071 ax-rnegex 11072 ax-rrecex 11073 ax-cnre 11074 ax-pre-lttri 11075 ax-pre-lttrn 11076 ax-pre-ltadd 11077 ax-pre-mulgt0 11078 ax-hfvadd 30972 ax-hvcom 30973 ax-hfvmul 30977 ax-hvmulid 30978 ax-hvmulass 30979 ax-hvdistr1 30980 ax-hfi 31051 ax-his1 31054 ax-his3 31056 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2535 df-eu 2564 df-clab 2710 df-cleq 2723 df-clel 2806 df-nfc 2881 df-ne 2929 df-nel 3033 df-ral 3048 df-rex 3057 df-rmo 3346 df-reu 3347 df-rab 3396 df-v 3438 df-sbc 3737 df-csb 3846 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-pss 3917 df-nul 4279 df-if 4471 df-pw 4547 df-sn 4572 df-pr 4574 df-op 4578 df-uni 4855 df-iun 4938 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5506 df-eprel 5511 df-po 5519 df-so 5520 df-fr 5564 df-we 5566 df-xp 5617 df-rel 5618 df-cnv 5619 df-co 5620 df-dm 5621 df-rn 5622 df-res 5623 df-ima 5624 df-pred 6243 df-ord 6304 df-on 6305 df-lim 6306 df-suc 6307 df-iota 6432 df-fun 6478 df-fn 6479 df-f 6480 df-f1 6481 df-fo 6482 df-f1o 6483 df-fv 6484 df-riota 7298 df-ov 7344 df-oprab 7345 df-mpo 7346 df-om 7792 df-2nd 7917 df-frecs 8206 df-wrecs 8237 df-recs 8286 df-rdg 8324 df-er 8617 df-en 8865 df-dom 8866 df-sdom 8867 df-pnf 11143 df-mnf 11144 df-xr 11145 df-ltxr 11146 df-le 11147 df-sub 11341 df-neg 11342 df-div 11770 df-nn 12121 df-2 12183 df-cj 15001 df-re 15002 df-im 15003 df-hvsub 30943 |
| This theorem is referenced by: lnophmlem2 31989 |
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