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| Mirrors > Home > MPE Home > Th. List > uvcvvcl | Structured version Visualization version GIF version | ||
| Description: A coordinate of a unit vector is either 0 or 1. (Contributed by Stefan O'Rear, 3-Feb-2015.) |
| Ref | Expression |
|---|---|
| uvcfval.u | ⊢ 𝑈 = (𝑅 unitVec 𝐼) |
| uvcfval.o | ⊢ 1 = (1r‘𝑅) |
| uvcfval.z | ⊢ 0 = (0g‘𝑅) |
| Ref | Expression |
|---|---|
| uvcvvcl | ⊢ (((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊 ∧ 𝐽 ∈ 𝐼) ∧ 𝐾 ∈ 𝐼) → ((𝑈‘𝐽)‘𝐾) ∈ { 0 , 1 }) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uvcfval.u | . . 3 ⊢ 𝑈 = (𝑅 unitVec 𝐼) | |
| 2 | uvcfval.o | . . 3 ⊢ 1 = (1r‘𝑅) | |
| 3 | uvcfval.z | . . 3 ⊢ 0 = (0g‘𝑅) | |
| 4 | 1, 2, 3 | uvcvval 21965 | . 2 ⊢ (((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊 ∧ 𝐽 ∈ 𝐼) ∧ 𝐾 ∈ 𝐼) → ((𝑈‘𝐽)‘𝐾) = if(𝐾 = 𝐽, 1 , 0 )) |
| 5 | 2 | fvexi 6899 | . . . 4 ⊢ 1 ∈ V |
| 6 | 3 | fvexi 6899 | . . . 4 ⊢ 0 ∈ V |
| 7 | ifpr 4661 | . . . 4 ⊢ (( 1 ∈ V ∧ 0 ∈ V) → if(𝐾 = 𝐽, 1 , 0 ) ∈ { 1 , 0 }) | |
| 8 | 5, 6, 7 | mp2an 705 | . . 3 ⊢ if(𝐾 = 𝐽, 1 , 0 ) ∈ { 1 , 0 } |
| 9 | prcom 4700 | . . 3 ⊢ { 1 , 0 } = { 0 , 1 } | |
| 10 | 8, 9 | eleqtri 2863 | . 2 ⊢ if(𝐾 = 𝐽, 1 , 0 ) ∈ { 0 , 1 } |
| 11 | 4, 10 | eqeltrdi 2873 | 1 ⊢ (((𝑅 ∈ 𝑉 ∧ 𝐼 ∈ 𝑊 ∧ 𝐽 ∈ 𝐼) ∧ 𝐾 ∈ 𝐼) → ((𝑈‘𝐽)‘𝐾) ∈ { 0 , 1 }) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2146 Vcvv 3457 ifcif 4489 {cpr 4593 ‘cfv 6540 (class class class)co 7416 0gc0g 17509 1rcur 20286 unitVec cuvc 21961 |
| 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 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-rep 5240 ax-sep 5259 ax-nul 5271 ax-pr 5406 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-csb 3855 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-nul 4287 df-if 4490 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-iun 4960 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5558 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-ov 7419 df-oprab 7420 df-mpo 7421 df-uvc 21962 |
| This theorem is used by: (None) |
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