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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 7422 | . . . . 5 ⊢ (𝑥 = 𝐴 → (𝐴 ·ih 𝑥) = (𝐴 ·ih 𝐴)) | |
| 2 | 1 | eqeq1d 2762 | . . . 4 ⊢ (𝑥 = 𝐴 → ((𝐴 ·ih 𝑥) = 0 ↔ (𝐴 ·ih 𝐴) = 0)) |
| 3 | 2 | rspcv 3572 | . . 3 ⊢ (𝐴 ∈ ℋ → (∀𝑥 ∈ ℋ (𝐴 ·ih 𝑥) = 0 → (𝐴 ·ih 𝐴) = 0)) |
| 4 | his6 31581 | . . 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 7421 | . . . . . 6 ⊢ (𝐴 = 0ℎ → (𝐴 ·ih 𝑥) = (0ℎ ·ih 𝑥)) | |
| 7 | hi01 31578 | . . . . . 6 ⊢ (𝑥 ∈ ℋ → (0ℎ ·ih 𝑥) = 0) | |
| 8 | 6, 7 | sylan9eq 2815 | . . . . 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 3160 | . 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 3076 (class class class)co 7414 0cc0 11125 ℋchba 31401 ·ih csp 31404 0ℎc0v 31406 |
| 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 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7737 ax-resscn 11182 ax-1cn 11183 ax-icn 11184 ax-addcl 11185 ax-addrcl 11186 ax-mulcl 11187 ax-mulrcl 11188 ax-mulcom 11189 ax-addass 11190 ax-mulass 11191 ax-distr 11192 ax-i2m1 11193 ax-1ne0 11194 ax-1rid 11195 ax-rnegex 11196 ax-rrecex 11197 ax-cnre 11198 ax-pre-lttri 11199 ax-pre-lttrn 11200 ax-pre-ltadd 11201 ax-hv0cl 31485 ax-hvmul0 31492 ax-hfi 31561 ax-his3 31566 ax-his4 31567 |
| 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 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 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 5550 df-po 5563 df-so 5564 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-ov 7417 df-er 8697 df-en 8954 df-dom 8955 df-sdom 8956 df-pnf 11270 df-mnf 11271 df-ltxr 11273 |
| This theorem is used by: choc1 31809 ho01i 32310 ho02i 32311 |
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