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Mirrors > Home > MPE Home > Th. List > diporthcom | Structured version Visualization version GIF version |
Description: Orthogonality (meaning inner product is 0) is commutative. (Contributed by NM, 17-Apr-2008.) (New usage is discouraged.) |
Ref | Expression |
---|---|
ipcl.1 | ⊢ 𝑋 = (BaseSet‘𝑈) |
ipcl.7 | ⊢ 𝑃 = (·𝑖OLD‘𝑈) |
Ref | Expression |
---|---|
diporthcom | ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → ((𝐴𝑃𝐵) = 0 ↔ (𝐵𝑃𝐴) = 0)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fveq2 6804 | . . . 4 ⊢ ((𝐴𝑃𝐵) = 0 → (∗‘(𝐴𝑃𝐵)) = (∗‘0)) | |
2 | cj0 14914 | . . . 4 ⊢ (∗‘0) = 0 | |
3 | 1, 2 | eqtrdi 2792 | . . 3 ⊢ ((𝐴𝑃𝐵) = 0 → (∗‘(𝐴𝑃𝐵)) = 0) |
4 | ipcl.1 | . . . . 5 ⊢ 𝑋 = (BaseSet‘𝑈) | |
5 | ipcl.7 | . . . . 5 ⊢ 𝑃 = (·𝑖OLD‘𝑈) | |
6 | 4, 5 | dipcj 29121 | . . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (∗‘(𝐴𝑃𝐵)) = (𝐵𝑃𝐴)) |
7 | 6 | eqeq1d 2738 | . . 3 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → ((∗‘(𝐴𝑃𝐵)) = 0 ↔ (𝐵𝑃𝐴) = 0)) |
8 | 3, 7 | syl5ib 244 | . 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → ((𝐴𝑃𝐵) = 0 → (𝐵𝑃𝐴) = 0)) |
9 | fveq2 6804 | . . . 4 ⊢ ((𝐵𝑃𝐴) = 0 → (∗‘(𝐵𝑃𝐴)) = (∗‘0)) | |
10 | 9, 2 | eqtrdi 2792 | . . 3 ⊢ ((𝐵𝑃𝐴) = 0 → (∗‘(𝐵𝑃𝐴)) = 0) |
11 | 4, 5 | dipcj 29121 | . . . . 5 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐵 ∈ 𝑋 ∧ 𝐴 ∈ 𝑋) → (∗‘(𝐵𝑃𝐴)) = (𝐴𝑃𝐵)) |
12 | 11 | 3com23 1126 | . . . 4 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → (∗‘(𝐵𝑃𝐴)) = (𝐴𝑃𝐵)) |
13 | 12 | eqeq1d 2738 | . . 3 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → ((∗‘(𝐵𝑃𝐴)) = 0 ↔ (𝐴𝑃𝐵) = 0)) |
14 | 10, 13 | syl5ib 244 | . 2 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → ((𝐵𝑃𝐴) = 0 → (𝐴𝑃𝐵) = 0)) |
15 | 8, 14 | impbid 211 | 1 ⊢ ((𝑈 ∈ NrmCVec ∧ 𝐴 ∈ 𝑋 ∧ 𝐵 ∈ 𝑋) → ((𝐴𝑃𝐵) = 0 ↔ (𝐵𝑃𝐴) = 0)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ w3a 1087 = wceq 1539 ∈ wcel 2104 ‘cfv 6458 (class class class)co 7307 0cc0 10917 ∗ccj 14852 NrmCVeccnv 28991 BaseSetcba 28993 ·𝑖OLDcdip 29107 |
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 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2707 ax-rep 5218 ax-sep 5232 ax-nul 5239 ax-pow 5297 ax-pr 5361 ax-un 7620 ax-inf2 9443 ax-cnex 10973 ax-resscn 10974 ax-1cn 10975 ax-icn 10976 ax-addcl 10977 ax-addrcl 10978 ax-mulcl 10979 ax-mulrcl 10980 ax-mulcom 10981 ax-addass 10982 ax-mulass 10983 ax-distr 10984 ax-i2m1 10985 ax-1ne0 10986 ax-1rid 10987 ax-rnegex 10988 ax-rrecex 10989 ax-cnre 10990 ax-pre-lttri 10991 ax-pre-lttrn 10992 ax-pre-ltadd 10993 ax-pre-mulgt0 10994 ax-pre-sup 10995 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3or 1088 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3285 df-reu 3286 df-rab 3287 df-v 3439 df-sbc 3722 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4566 df-pr 4568 df-op 4572 df-uni 4845 df-int 4887 df-iun 4933 df-br 5082 df-opab 5144 df-mpt 5165 df-tr 5199 df-id 5500 df-eprel 5506 df-po 5514 df-so 5515 df-fr 5555 df-se 5556 df-we 5557 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-pred 6217 df-ord 6284 df-on 6285 df-lim 6286 df-suc 6287 df-iota 6410 df-fun 6460 df-fn 6461 df-f 6462 df-f1 6463 df-fo 6464 df-f1o 6465 df-fv 6466 df-isom 6467 df-riota 7264 df-ov 7310 df-oprab 7311 df-mpo 7312 df-om 7745 df-1st 7863 df-2nd 7864 df-frecs 8128 df-wrecs 8159 df-recs 8233 df-rdg 8272 df-1o 8328 df-er 8529 df-en 8765 df-dom 8766 df-sdom 8767 df-fin 8768 df-sup 9245 df-oi 9313 df-card 9741 df-pnf 11057 df-mnf 11058 df-xr 11059 df-ltxr 11060 df-le 11061 df-sub 11253 df-neg 11254 df-div 11679 df-nn 12020 df-2 12082 df-3 12083 df-4 12084 df-n0 12280 df-z 12366 df-uz 12629 df-rp 12777 df-fz 13286 df-fzo 13429 df-seq 13768 df-exp 13829 df-hash 14091 df-cj 14855 df-re 14856 df-im 14857 df-sqrt 14991 df-abs 14992 df-clim 15242 df-sum 15443 df-grpo 28900 df-gid 28901 df-ginv 28902 df-ablo 28952 df-vc 28966 df-nv 28999 df-va 29002 df-ba 29003 df-sm 29004 df-0v 29005 df-nmcv 29007 df-dip 29108 |
This theorem is referenced by: pythi 29257 |
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