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| Mirrors > Home > MPE Home > Th. List > strfvd | Structured version Visualization version GIF version | ||
| Description: Deduction version of strfv 17171. (Contributed by Mario Carneiro, 15-Nov-2014.) |
| Ref | Expression |
|---|---|
| strfvd.e | ⊢ 𝐸 = Slot (𝐸‘ndx) |
| strfvd.s | ⊢ (𝜑 → 𝑆 ∈ 𝑉) |
| strfvd.f | ⊢ (𝜑 → Fun 𝑆) |
| strfvd.n | ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ 𝑆) |
| Ref | Expression |
|---|---|
| strfvd | ⊢ (𝜑 → 𝐶 = (𝐸‘𝑆)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | strfvd.e | . . 3 ⊢ 𝐸 = Slot (𝐸‘ndx) | |
| 2 | strfvd.s | . . 3 ⊢ (𝜑 → 𝑆 ∈ 𝑉) | |
| 3 | 1, 2 | strfvnd 17153 | . 2 ⊢ (𝜑 → (𝐸‘𝑆) = (𝑆‘(𝐸‘ndx))) |
| 4 | strfvd.f | . . 3 ⊢ (𝜑 → Fun 𝑆) | |
| 5 | strfvd.n | . . 3 ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ 𝑆) | |
| 6 | funopfv 6883 | . . 3 ⊢ (Fun 𝑆 → (〈(𝐸‘ndx), 𝐶〉 ∈ 𝑆 → (𝑆‘(𝐸‘ndx)) = 𝐶)) | |
| 7 | 4, 5, 6 | sylc 65 | . 2 ⊢ (𝜑 → (𝑆‘(𝐸‘ndx)) = 𝐶) |
| 8 | 3, 7 | eqtr2d 2776 | 1 ⊢ (𝜑 → 𝐶 = (𝐸‘𝑆)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1547 ∈ wcel 2119 〈cop 4568 Fun wfun 6486 ‘cfv 6492 Slot cslot 17149 ndxcnx 17161 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-sep 5225 ax-nul 5235 ax-pr 5369 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-ral 3055 df-rex 3065 df-rab 3393 df-v 3434 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4269 df-if 4462 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-br 5080 df-opab 5142 df-mpt 5161 df-id 5520 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-iota 6448 df-fun 6494 df-fv 6500 df-slot 17150 |
| This theorem is referenced by: strssd 17173 |
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