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| Mirrors > Home > ILE Home > Th. List > strslfvd | GIF version | ||
| Description: Deduction version of strslfv 12921. (Contributed by Mario Carneiro, 15-Nov-2014.) (Revised by Jim Kingdon, 30-Jan-2023.) |
| Ref | Expression |
|---|---|
| strslfvd.e | ⊢ (𝐸 = Slot (𝐸‘ndx) ∧ (𝐸‘ndx) ∈ ℕ) |
| strfvd.s | ⊢ (𝜑 → 𝑆 ∈ 𝑉) |
| strfvd.f | ⊢ (𝜑 → Fun 𝑆) |
| strfvd.n | ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ 𝑆) |
| Ref | Expression |
|---|---|
| strslfvd | ⊢ (𝜑 → 𝐶 = (𝐸‘𝑆)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | strslfvd.e | . . . 4 ⊢ (𝐸 = Slot (𝐸‘ndx) ∧ (𝐸‘ndx) ∈ ℕ) | |
| 2 | 1 | simpli 111 | . . 3 ⊢ 𝐸 = Slot (𝐸‘ndx) |
| 3 | strfvd.s | . . 3 ⊢ (𝜑 → 𝑆 ∈ 𝑉) | |
| 4 | 1 | simpri 113 | . . . 4 ⊢ (𝐸‘ndx) ∈ ℕ |
| 5 | 4 | a1i 9 | . . 3 ⊢ (𝜑 → (𝐸‘ndx) ∈ ℕ) |
| 6 | 2, 3, 5 | strnfvnd 12896 | . 2 ⊢ (𝜑 → (𝐸‘𝑆) = (𝑆‘(𝐸‘ndx))) |
| 7 | strfvd.f | . . 3 ⊢ (𝜑 → Fun 𝑆) | |
| 8 | strfvd.n | . . 3 ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ 𝑆) | |
| 9 | funopfv 5625 | . . 3 ⊢ (Fun 𝑆 → (〈(𝐸‘ndx), 𝐶〉 ∈ 𝑆 → (𝑆‘(𝐸‘ndx)) = 𝐶)) | |
| 10 | 7, 8, 9 | sylc 62 | . 2 ⊢ (𝜑 → (𝑆‘(𝐸‘ndx)) = 𝐶) |
| 11 | 6, 10 | eqtr2d 2240 | 1 ⊢ (𝜑 → 𝐶 = (𝐸‘𝑆)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1373 ∈ wcel 2177 〈cop 3637 Fun wfun 5270 ‘cfv 5276 ℕcn 9043 ndxcnx 12873 Slot cslot 12875 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 711 ax-5 1471 ax-7 1472 ax-gen 1473 ax-ie1 1517 ax-ie2 1518 ax-8 1528 ax-10 1529 ax-11 1530 ax-i12 1531 ax-bndl 1533 ax-4 1534 ax-17 1550 ax-i9 1554 ax-ial 1558 ax-i5r 1559 ax-13 2179 ax-14 2180 ax-ext 2188 ax-sep 4166 ax-pow 4222 ax-pr 4257 ax-un 4484 |
| This theorem depends on definitions: df-bi 117 df-3an 983 df-tru 1376 df-nf 1485 df-sb 1787 df-eu 2058 df-mo 2059 df-clab 2193 df-cleq 2199 df-clel 2202 df-nfc 2338 df-ral 2490 df-rex 2491 df-v 2775 df-sbc 3000 df-un 3171 df-in 3173 df-ss 3180 df-pw 3619 df-sn 3640 df-pr 3641 df-op 3643 df-uni 3853 df-br 4048 df-opab 4110 df-mpt 4111 df-id 4344 df-xp 4685 df-rel 4686 df-cnv 4687 df-co 4688 df-dm 4689 df-rn 4690 df-iota 5237 df-fun 5278 df-fv 5284 df-slot 12880 |
| This theorem is referenced by: strslssd 12923 1strbas 12993 2strbasg 12996 2stropg 12997 |
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