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Mirrors > Home > HSE Home > Th. List > his6 | Structured version Visualization version GIF version |
Description: Zero inner product with self means vector is zero. Lemma 3.1(S6) of [Beran] p. 95. (Contributed by NM, 27-Jul-1999.) (New usage is discouraged.) |
Ref | Expression |
---|---|
his6 | ⊢ (𝐴 ∈ ℋ → ((𝐴 ·ih 𝐴) = 0 ↔ 𝐴 = 0ℎ)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ax-his4 29120 | . . . . 5 ⊢ ((𝐴 ∈ ℋ ∧ 𝐴 ≠ 0ℎ) → 0 < (𝐴 ·ih 𝐴)) | |
2 | 1 | gt0ne0d 11361 | . . . 4 ⊢ ((𝐴 ∈ ℋ ∧ 𝐴 ≠ 0ℎ) → (𝐴 ·ih 𝐴) ≠ 0) |
3 | 2 | ex 416 | . . 3 ⊢ (𝐴 ∈ ℋ → (𝐴 ≠ 0ℎ → (𝐴 ·ih 𝐴) ≠ 0)) |
4 | 3 | necon4d 2956 | . 2 ⊢ (𝐴 ∈ ℋ → ((𝐴 ·ih 𝐴) = 0 → 𝐴 = 0ℎ)) |
5 | hi01 29131 | . . 3 ⊢ (𝐴 ∈ ℋ → (0ℎ ·ih 𝐴) = 0) | |
6 | oveq1 7198 | . . . 4 ⊢ (𝐴 = 0ℎ → (𝐴 ·ih 𝐴) = (0ℎ ·ih 𝐴)) | |
7 | 6 | eqeq1d 2738 | . . 3 ⊢ (𝐴 = 0ℎ → ((𝐴 ·ih 𝐴) = 0 ↔ (0ℎ ·ih 𝐴) = 0)) |
8 | 5, 7 | syl5ibrcom 250 | . 2 ⊢ (𝐴 ∈ ℋ → (𝐴 = 0ℎ → (𝐴 ·ih 𝐴) = 0)) |
9 | 4, 8 | impbid 215 | 1 ⊢ (𝐴 ∈ ℋ → ((𝐴 ·ih 𝐴) = 0 ↔ 𝐴 = 0ℎ)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 209 ∧ wa 399 = wceq 1543 ∈ wcel 2112 ≠ wne 2932 (class class class)co 7191 0cc0 10694 ℋchba 28954 ·ih csp 28957 0ℎc0v 28959 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2018 ax-8 2114 ax-9 2122 ax-10 2143 ax-11 2160 ax-12 2177 ax-ext 2708 ax-sep 5177 ax-nul 5184 ax-pow 5243 ax-pr 5307 ax-un 7501 ax-resscn 10751 ax-1cn 10752 ax-icn 10753 ax-addcl 10754 ax-addrcl 10755 ax-mulcl 10756 ax-mulrcl 10757 ax-mulcom 10758 ax-addass 10759 ax-mulass 10760 ax-distr 10761 ax-i2m1 10762 ax-1ne0 10763 ax-1rid 10764 ax-rnegex 10765 ax-rrecex 10766 ax-cnre 10767 ax-pre-lttri 10768 ax-pre-lttrn 10769 ax-pre-ltadd 10770 ax-hv0cl 29038 ax-hvmul0 29045 ax-hfi 29114 ax-his3 29119 ax-his4 29120 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3or 1090 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2073 df-mo 2539 df-eu 2568 df-clab 2715 df-cleq 2728 df-clel 2809 df-nfc 2879 df-ne 2933 df-nel 3037 df-ral 3056 df-rex 3057 df-rab 3060 df-v 3400 df-sbc 3684 df-csb 3799 df-dif 3856 df-un 3858 df-in 3860 df-ss 3870 df-nul 4224 df-if 4426 df-pw 4501 df-sn 4528 df-pr 4530 df-op 4534 df-uni 4806 df-iun 4892 df-br 5040 df-opab 5102 df-mpt 5121 df-id 5440 df-po 5453 df-so 5454 df-xp 5542 df-rel 5543 df-cnv 5544 df-co 5545 df-dm 5546 df-rn 5547 df-res 5548 df-ima 5549 df-iota 6316 df-fun 6360 df-fn 6361 df-f 6362 df-f1 6363 df-fo 6364 df-f1o 6365 df-fv 6366 df-ov 7194 df-er 8369 df-en 8605 df-dom 8606 df-sdom 8607 df-pnf 10834 df-mnf 10835 df-ltxr 10837 |
This theorem is referenced by: hial0 29137 hial02 29138 hi2eq 29140 bcseqi 29155 ocin 29331 h1de2bi 29589 h1de2ctlem 29590 normcan 29611 unopf1o 29951 riesz3i 30097 |
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