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| Mirrors > Home > ILE Home > Th. List > strslfv2d | GIF version | ||
| Description: Deduction version of strslfv 12748. (Contributed by Mario Carneiro, 30-Apr-2015.) (Revised by Jim Kingdon, 30-Jan-2023.) |
| Ref | Expression |
|---|---|
| strslfv2d.e | ⊢ (𝐸 = Slot (𝐸‘ndx) ∧ (𝐸‘ndx) ∈ ℕ) |
| strfv2d.s | ⊢ (𝜑 → 𝑆 ∈ 𝑉) |
| strfv2d.f | ⊢ (𝜑 → Fun ◡◡𝑆) |
| strfv2d.n | ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ 𝑆) |
| strfv2d.c | ⊢ (𝜑 → 𝐶 ∈ 𝑊) |
| Ref | Expression |
|---|---|
| strslfv2d | ⊢ (𝜑 → 𝐶 = (𝐸‘𝑆)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | strslfv2d.e | . . . 4 ⊢ (𝐸 = Slot (𝐸‘ndx) ∧ (𝐸‘ndx) ∈ ℕ) | |
| 2 | 1 | simpli 111 | . . 3 ⊢ 𝐸 = Slot (𝐸‘ndx) |
| 3 | strfv2d.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 12723 | . 2 ⊢ (𝜑 → (𝐸‘𝑆) = (𝑆‘(𝐸‘ndx))) |
| 7 | cnvcnv2 5124 | . . . 4 ⊢ ◡◡𝑆 = (𝑆 ↾ V) | |
| 8 | 7 | fveq1i 5562 | . . 3 ⊢ (◡◡𝑆‘(𝐸‘ndx)) = ((𝑆 ↾ V)‘(𝐸‘ndx)) |
| 9 | 5 | elexd 2776 | . . . 4 ⊢ (𝜑 → (𝐸‘ndx) ∈ V) |
| 10 | fvres 5585 | . . . 4 ⊢ ((𝐸‘ndx) ∈ V → ((𝑆 ↾ V)‘(𝐸‘ndx)) = (𝑆‘(𝐸‘ndx))) | |
| 11 | 9, 10 | syl 14 | . . 3 ⊢ (𝜑 → ((𝑆 ↾ V)‘(𝐸‘ndx)) = (𝑆‘(𝐸‘ndx))) |
| 12 | 8, 11 | eqtrid 2241 | . 2 ⊢ (𝜑 → (◡◡𝑆‘(𝐸‘ndx)) = (𝑆‘(𝐸‘ndx))) |
| 13 | strfv2d.f | . . 3 ⊢ (𝜑 → Fun ◡◡𝑆) | |
| 14 | strfv2d.n | . . . . 5 ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ 𝑆) | |
| 15 | strfv2d.c | . . . . . . 7 ⊢ (𝜑 → 𝐶 ∈ 𝑊) | |
| 16 | 15 | elexd 2776 | . . . . . 6 ⊢ (𝜑 → 𝐶 ∈ V) |
| 17 | 9, 16 | opelxpd 4697 | . . . . 5 ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ (V × V)) |
| 18 | 14, 17 | elind 3349 | . . . 4 ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ (𝑆 ∩ (V × V))) |
| 19 | cnvcnv 5123 | . . . 4 ⊢ ◡◡𝑆 = (𝑆 ∩ (V × V)) | |
| 20 | 18, 19 | eleqtrrdi 2290 | . . 3 ⊢ (𝜑 → 〈(𝐸‘ndx), 𝐶〉 ∈ ◡◡𝑆) |
| 21 | funopfv 5603 | . . 3 ⊢ (Fun ◡◡𝑆 → (〈(𝐸‘ndx), 𝐶〉 ∈ ◡◡𝑆 → (◡◡𝑆‘(𝐸‘ndx)) = 𝐶)) | |
| 22 | 13, 20, 21 | sylc 62 | . 2 ⊢ (𝜑 → (◡◡𝑆‘(𝐸‘ndx)) = 𝐶) |
| 23 | 6, 12, 22 | 3eqtr2rd 2236 | 1 ⊢ (𝜑 → 𝐶 = (𝐸‘𝑆)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1364 ∈ wcel 2167 Vcvv 2763 ∩ cin 3156 〈cop 3626 × cxp 4662 ◡ccnv 4663 ↾ cres 4666 Fun wfun 5253 ‘cfv 5259 ℕcn 9007 ndxcnx 12700 Slot cslot 12702 |
| 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 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4152 ax-pow 4208 ax-pr 4243 ax-un 4469 |
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-nf 1475 df-sb 1777 df-eu 2048 df-mo 2049 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-v 2765 df-sbc 2990 df-un 3161 df-in 3163 df-ss 3170 df-pw 3608 df-sn 3629 df-pr 3630 df-op 3632 df-uni 3841 df-br 4035 df-opab 4096 df-mpt 4097 df-id 4329 df-xp 4670 df-rel 4671 df-cnv 4672 df-co 4673 df-dm 4674 df-rn 4675 df-res 4676 df-iota 5220 df-fun 5261 df-fv 5267 df-slot 12707 |
| This theorem is referenced by: strslfv2 12747 strslfv 12748 strslfv3 12749 opelstrsl 12817 |
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