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Mirrors > Home > MPE Home > Th. List > strfv2d | Structured version Visualization version GIF version |
Description: Deduction version of strfv2 17237. (Contributed by Mario Carneiro, 30-Apr-2015.) |
Ref | Expression |
---|---|
strfv2d.e | ⊢ 𝐸 = Slot (𝐸‘ndx) |
strfv2d.s | ⊢ (𝜑 → 𝑆 ∈ 𝑉) |
strfv2d.f | ⊢ (𝜑 → Fun ◡◡𝑆) |
strfv2d.n | ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ 𝑆) |
strfv2d.c | ⊢ (𝜑 → 𝐶 ∈ 𝑊) |
Ref | Expression |
---|---|
strfv2d | ⊢ (𝜑 → 𝐶 = (𝐸‘𝑆)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | strfv2d.e | . . 3 ⊢ 𝐸 = Slot (𝐸‘ndx) | |
2 | strfv2d.s | . . 3 ⊢ (𝜑 → 𝑆 ∈ 𝑉) | |
3 | 1, 2 | strfvnd 17219 | . 2 ⊢ (𝜑 → (𝐸‘𝑆) = (𝑆‘(𝐸‘ndx))) |
4 | cnvcnv2 6215 | . . . . 5 ⊢ ◡◡𝑆 = (𝑆 ↾ V) | |
5 | 4 | fveq1i 6908 | . . . 4 ⊢ (◡◡𝑆‘(𝐸‘ndx)) = ((𝑆 ↾ V)‘(𝐸‘ndx)) |
6 | fvex 6920 | . . . . 5 ⊢ (𝐸‘ndx) ∈ V | |
7 | fvres 6926 | . . . . 5 ⊢ ((𝐸‘ndx) ∈ V → ((𝑆 ↾ V)‘(𝐸‘ndx)) = (𝑆‘(𝐸‘ndx))) | |
8 | 6, 7 | ax-mp 5 | . . . 4 ⊢ ((𝑆 ↾ V)‘(𝐸‘ndx)) = (𝑆‘(𝐸‘ndx)) |
9 | 5, 8 | eqtri 2763 | . . 3 ⊢ (◡◡𝑆‘(𝐸‘ndx)) = (𝑆‘(𝐸‘ndx)) |
10 | strfv2d.f | . . . 4 ⊢ (𝜑 → Fun ◡◡𝑆) | |
11 | strfv2d.n | . . . . . 6 ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ 𝑆) | |
12 | strfv2d.c | . . . . . . . 8 ⊢ (𝜑 → 𝐶 ∈ 𝑊) | |
13 | 12 | elexd 3502 | . . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ V) |
14 | opelxpi 5726 | . . . . . . 7 ⊢ (((𝐸‘ndx) ∈ V ∧ 𝐶 ∈ V) → 〈(𝐸‘ndx), 𝐶〉 ∈ (V × V)) | |
15 | 6, 13, 14 | sylancr 587 | . . . . . 6 ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ (V × V)) |
16 | 11, 15 | elind 4210 | . . . . 5 ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ (𝑆 ∩ (V × V))) |
17 | cnvcnv 6214 | . . . . 5 ⊢ ◡◡𝑆 = (𝑆 ∩ (V × V)) | |
18 | 16, 17 | eleqtrrdi 2850 | . . . 4 ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ ◡◡𝑆) |
19 | funopfv 6959 | . . . 4 ⊢ (Fun ◡◡𝑆 → (〈(𝐸‘ndx), 𝐶〉 ∈ ◡◡𝑆 → (◡◡𝑆‘(𝐸‘ndx)) = 𝐶)) | |
20 | 10, 18, 19 | sylc 65 | . . 3 ⊢ (𝜑 → (◡◡𝑆‘(𝐸‘ndx)) = 𝐶) |
21 | 9, 20 | eqtr3id 2789 | . 2 ⊢ (𝜑 → (𝑆‘(𝐸‘ndx)) = 𝐶) |
22 | 3, 21 | eqtr2d 2776 | 1 ⊢ (𝜑 → 𝐶 = (𝐸‘𝑆)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1537 ∈ wcel 2106 Vcvv 3478 ∩ cin 3962 〈cop 4637 × cxp 5687 ◡ccnv 5688 ↾ cres 5691 Fun wfun 6557 ‘cfv 6563 Slot cslot 17215 ndxcnx 17227 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1908 ax-6 1965 ax-7 2005 ax-8 2108 ax-9 2116 ax-10 2139 ax-11 2155 ax-12 2175 ax-ext 2706 ax-sep 5302 ax-nul 5312 ax-pr 5438 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1540 df-fal 1550 df-ex 1777 df-nf 1781 df-sb 2063 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2727 df-clel 2814 df-nfc 2890 df-ne 2939 df-ral 3060 df-rex 3069 df-rab 3434 df-v 3480 df-dif 3966 df-un 3968 df-in 3970 df-ss 3980 df-nul 4340 df-if 4532 df-sn 4632 df-pr 4634 df-op 4638 df-uni 4913 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5583 df-xp 5695 df-rel 5696 df-cnv 5697 df-co 5698 df-dm 5699 df-res 5701 df-iota 6516 df-fun 6565 df-fv 6571 df-slot 17216 |
This theorem is referenced by: strfv2 17237 opelstrbas 17259 ebtwntg 29012 ecgrtg 29013 elntg 29014 edgfiedgval 29049 |
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