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| Mirrors > Home > HSE Home > Th. List > hial0 | Structured version Visualization version GIF version | ||
| Description: A vector whose inner product is always zero is zero. (Contributed by NM, 24-Oct-1999.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| hial0 | ⊢ (𝐴 ∈ ℋ → (∀𝑥 ∈ ℋ (𝐴 ·ih 𝑥) = 0 ↔ 𝐴 = 0ℎ)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oveq2 7428 | . . . . 5 ⊢ (𝑥 = 𝐴 → (𝐴 ·ih 𝑥) = (𝐴 ·ih 𝐴)) | |
| 2 | 1 | eqeq1d 2763 | . . . 4 ⊢ (𝑥 = 𝐴 → ((𝐴 ·ih 𝑥) = 0 ↔ (𝐴 ·ih 𝐴) = 0)) |
| 3 | 2 | rspcv 3573 | . . 3 ⊢ (𝐴 ∈ ℋ → (∀𝑥 ∈ ℋ (𝐴 ·ih 𝑥) = 0 → (𝐴 ·ih 𝐴) = 0)) |
| 4 | his6 31701 | . . 3 ⊢ (𝐴 ∈ ℋ → ((𝐴 ·ih 𝐴) = 0 ↔ 𝐴 = 0ℎ)) | |
| 5 | 3, 4 | sylibd 242 | . 2 ⊢ (𝐴 ∈ ℋ → (∀𝑥 ∈ ℋ (𝐴 ·ih 𝑥) = 0 → 𝐴 = 0ℎ)) |
| 6 | oveq1 7427 | . . . . . 6 ⊢ (𝐴 = 0ℎ → (𝐴 ·ih 𝑥) = (0ℎ ·ih 𝑥)) | |
| 7 | hi01 31698 | . . . . . 6 ⊢ (𝑥 ∈ ℋ → (0ℎ ·ih 𝑥) = 0) | |
| 8 | 6, 7 | sylan9eq 2816 | . . . . 5 ⊢ ((𝐴 = 0ℎ ∧ 𝑥 ∈ ℋ) → (𝐴 ·ih 𝑥) = 0) |
| 9 | 8 | ex 418 | . . . 4 ⊢ (𝐴 = 0ℎ → (𝑥 ∈ ℋ → (𝐴 ·ih 𝑥) = 0)) |
| 10 | 9 | a1i 11 | . . 3 ⊢ (𝐴 ∈ ℋ → (𝐴 = 0ℎ → (𝑥 ∈ ℋ → (𝐴 ·ih 𝑥) = 0))) |
| 11 | 10 | ralrimdv 3161 | . 2 ⊢ (𝐴 ∈ ℋ → (𝐴 = 0ℎ → ∀𝑥 ∈ ℋ (𝐴 ·ih 𝑥) = 0)) |
| 12 | 5, 11 | impbid 215 | 1 ⊢ (𝐴 ∈ ℋ → (∀𝑥 ∈ ℋ (𝐴 ·ih 𝑥) = 0 ↔ 𝐴 = 0ℎ)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 = wceq 1570 ∈ wcel 2145 ∀wral 3077 (class class class)co 7420 0cc0 11200 ℋchba 31521 ·ih csp 31524 0ℎc0v 31526 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7751 ax-resscn 11257 ax-1cn 11258 ax-icn 11259 ax-addcl 11260 ax-addrcl 11261 ax-mulcl 11262 ax-mulrcl 11263 ax-mulcom 11264 ax-addass 11265 ax-mulass 11266 ax-distr 11267 ax-i2m1 11268 ax-1ne0 11269 ax-1rid 11270 ax-rnegex 11271 ax-rrecex 11272 ax-cnre 11273 ax-pre-lttri 11274 ax-pre-lttrn 11275 ax-pre-ltadd 11276 ax-hv0cl 31605 ax-hvmul0 31612 ax-hfi 31681 ax-his3 31686 ax-his4 31687 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-nel 3063 df-ral 3078 df-rex 3088 df-rab 3414 df-v 3453 df-sbc 3740 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-iun 4953 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5546 df-po 5559 df-so 5560 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6494 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 df-fo 6544 df-f1o 6545 df-fv 6546 df-ov 7423 df-er 8717 df-en 8974 df-dom 8975 df-sdom 8976 df-pnf 11345 df-mnf 11346 df-ltxr 11348 |
| This theorem is used by: choc1 31929 ho01i 32430 ho02i 32431 |
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