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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 30997 | . . 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 30997 | . . 3 ⊢ (-1 ·ℎ (𝐷 −ℎ 𝐶)) = (𝐶 −ℎ 𝐷) |
| 7 | 3, 6 | oveq12i 7401 | . 2 ⊢ ((-1 ·ℎ (𝐵 −ℎ 𝐴)) ·ih (-1 ·ℎ (𝐷 −ℎ 𝐶))) = ((𝐴 −ℎ 𝐵) ·ih (𝐶 −ℎ 𝐷)) |
| 8 | neg1cn 12301 | . . . 4 ⊢ -1 ∈ ℂ | |
| 9 | 1, 2 | hvsubcli 30956 | . . . 4 ⊢ (𝐵 −ℎ 𝐴) ∈ ℋ |
| 10 | 4, 5 | hvsubcli 30956 | . . . 4 ⊢ (𝐷 −ℎ 𝐶) ∈ ℋ |
| 11 | 8, 8, 9, 10 | his35i 31024 | . . 3 ⊢ ((-1 ·ℎ (𝐵 −ℎ 𝐴)) ·ih (-1 ·ℎ (𝐷 −ℎ 𝐶))) = ((-1 · (∗‘-1)) · ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶))) |
| 12 | neg1rr 12302 | . . . . . . 7 ⊢ -1 ∈ ℝ | |
| 13 | cjre 15111 | . . . . . . 7 ⊢ (-1 ∈ ℝ → (∗‘-1) = -1) | |
| 14 | 12, 13 | ax-mp 5 | . . . . . 6 ⊢ (∗‘-1) = -1 |
| 15 | 14 | oveq2i 7400 | . . . . 5 ⊢ (-1 · (∗‘-1)) = (-1 · -1) |
| 16 | ax-1cn 11132 | . . . . . 6 ⊢ 1 ∈ ℂ | |
| 17 | 16, 16 | mul2negi 11632 | . . . . 5 ⊢ (-1 · -1) = (1 · 1) |
| 18 | 1t1e1 12349 | . . . . 5 ⊢ (1 · 1) = 1 | |
| 19 | 15, 17, 18 | 3eqtri 2757 | . . . 4 ⊢ (-1 · (∗‘-1)) = 1 |
| 20 | 19 | oveq1i 7399 | . . 3 ⊢ ((-1 · (∗‘-1)) · ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶))) = (1 · ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶))) |
| 21 | 9, 10 | hicli 31016 | . . . 4 ⊢ ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) ∈ ℂ |
| 22 | 21 | mullidi 11185 | . . 3 ⊢ (1 · ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶))) = ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) |
| 23 | 11, 20, 22 | 3eqtri 2757 | . 2 ⊢ ((-1 ·ℎ (𝐵 −ℎ 𝐴)) ·ih (-1 ·ℎ (𝐷 −ℎ 𝐶))) = ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) |
| 24 | 7, 23 | eqtr3i 2755 | 1 ⊢ ((𝐴 −ℎ 𝐵) ·ih (𝐶 −ℎ 𝐷)) = ((𝐵 −ℎ 𝐴) ·ih (𝐷 −ℎ 𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1540 ∈ wcel 2109 ‘cfv 6513 (class class class)co 7389 ℝcr 11073 1c1 11075 · cmul 11079 -cneg 11412 ∗ccj 15068 ℋchba 30854 ·ℎ csm 30856 ·ih csp 30857 −ℎ cmv 30860 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-sep 5253 ax-nul 5263 ax-pow 5322 ax-pr 5389 ax-un 7713 ax-resscn 11131 ax-1cn 11132 ax-icn 11133 ax-addcl 11134 ax-addrcl 11135 ax-mulcl 11136 ax-mulrcl 11137 ax-mulcom 11138 ax-addass 11139 ax-mulass 11140 ax-distr 11141 ax-i2m1 11142 ax-1ne0 11143 ax-1rid 11144 ax-rnegex 11145 ax-rrecex 11146 ax-cnre 11147 ax-pre-lttri 11148 ax-pre-lttrn 11149 ax-pre-ltadd 11150 ax-pre-mulgt0 11151 ax-hfvadd 30935 ax-hvcom 30936 ax-hfvmul 30940 ax-hvmulid 30941 ax-hvmulass 30942 ax-hvdistr1 30943 ax-hfi 31014 ax-his1 31017 ax-his3 31019 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-nel 3031 df-ral 3046 df-rex 3055 df-rmo 3356 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3756 df-csb 3865 df-dif 3919 df-un 3921 df-in 3923 df-ss 3933 df-pss 3936 df-nul 4299 df-if 4491 df-pw 4567 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4874 df-iun 4959 df-br 5110 df-opab 5172 df-mpt 5191 df-tr 5217 df-id 5535 df-eprel 5540 df-po 5548 df-so 5549 df-fr 5593 df-we 5595 df-xp 5646 df-rel 5647 df-cnv 5648 df-co 5649 df-dm 5650 df-rn 5651 df-res 5652 df-ima 5653 df-pred 6276 df-ord 6337 df-on 6338 df-lim 6339 df-suc 6340 df-iota 6466 df-fun 6515 df-fn 6516 df-f 6517 df-f1 6518 df-fo 6519 df-f1o 6520 df-fv 6521 df-riota 7346 df-ov 7392 df-oprab 7393 df-mpo 7394 df-om 7845 df-2nd 7971 df-frecs 8262 df-wrecs 8293 df-recs 8342 df-rdg 8380 df-er 8673 df-en 8921 df-dom 8922 df-sdom 8923 df-pnf 11216 df-mnf 11217 df-xr 11218 df-ltxr 11219 df-le 11220 df-sub 11413 df-neg 11414 df-div 11842 df-nn 12188 df-2 12250 df-cj 15071 df-re 15072 df-im 15073 df-hvsub 30906 |
| This theorem is referenced by: lnophmlem2 31952 |
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