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| Mirrors > Home > ILE Home > Th. List > setsslnid | GIF version | ||
| Description: Value of the structure replacement function at an untouched index. (Contributed by Mario Carneiro, 1-Dec-2014.) (Revised by Jim Kingdon, 24-Jan-2023.) | 
| Ref | Expression | 
|---|---|
| setsslid.e | ⊢ (𝐸 = Slot (𝐸‘ndx) ∧ (𝐸‘ndx) ∈ ℕ) | 
| setsslnid.n | ⊢ (𝐸‘ndx) ≠ 𝐷 | 
| setsslnid.d | ⊢ 𝐷 ∈ ℕ | 
| Ref | Expression | 
|---|---|
| setsslnid | ⊢ ((𝑊 ∈ 𝐴 ∧ 𝐶 ∈ 𝑉) → (𝐸‘𝑊) = (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉))) | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | setsslnid.d | . . . . 5 ⊢ 𝐷 ∈ ℕ | |
| 2 | setsresg 12716 | . . . . 5 ⊢ ((𝑊 ∈ 𝐴 ∧ 𝐷 ∈ ℕ ∧ 𝐶 ∈ 𝑉) → ((𝑊 sSet 〈𝐷, 𝐶〉) ↾ (V ∖ {𝐷})) = (𝑊 ↾ (V ∖ {𝐷}))) | |
| 3 | 1, 2 | mp3an2 1336 | . . . 4 ⊢ ((𝑊 ∈ 𝐴 ∧ 𝐶 ∈ 𝑉) → ((𝑊 sSet 〈𝐷, 𝐶〉) ↾ (V ∖ {𝐷})) = (𝑊 ↾ (V ∖ {𝐷}))) | 
| 4 | 3 | fveq1d 5560 | . . 3 ⊢ ((𝑊 ∈ 𝐴 ∧ 𝐶 ∈ 𝑉) → (((𝑊 sSet 〈𝐷, 𝐶〉) ↾ (V ∖ {𝐷}))‘(𝐸‘ndx)) = ((𝑊 ↾ (V ∖ {𝐷}))‘(𝐸‘ndx))) | 
| 5 | setsslid.e | . . . . . . 7 ⊢ (𝐸 = Slot (𝐸‘ndx) ∧ (𝐸‘ndx) ∈ ℕ) | |
| 6 | 5 | simpri 113 | . . . . . 6 ⊢ (𝐸‘ndx) ∈ ℕ | 
| 7 | 6 | elexi 2775 | . . . . 5 ⊢ (𝐸‘ndx) ∈ V | 
| 8 | setsslnid.n | . . . . 5 ⊢ (𝐸‘ndx) ≠ 𝐷 | |
| 9 | eldifsn 3749 | . . . . 5 ⊢ ((𝐸‘ndx) ∈ (V ∖ {𝐷}) ↔ ((𝐸‘ndx) ∈ V ∧ (𝐸‘ndx) ≠ 𝐷)) | |
| 10 | 7, 8, 9 | mpbir2an 944 | . . . 4 ⊢ (𝐸‘ndx) ∈ (V ∖ {𝐷}) | 
| 11 | fvres 5582 | . . . 4 ⊢ ((𝐸‘ndx) ∈ (V ∖ {𝐷}) → (((𝑊 sSet 〈𝐷, 𝐶〉) ↾ (V ∖ {𝐷}))‘(𝐸‘ndx)) = ((𝑊 sSet 〈𝐷, 𝐶〉)‘(𝐸‘ndx))) | |
| 12 | 10, 11 | ax-mp 5 | . . 3 ⊢ (((𝑊 sSet 〈𝐷, 𝐶〉) ↾ (V ∖ {𝐷}))‘(𝐸‘ndx)) = ((𝑊 sSet 〈𝐷, 𝐶〉)‘(𝐸‘ndx)) | 
| 13 | fvres 5582 | . . . 4 ⊢ ((𝐸‘ndx) ∈ (V ∖ {𝐷}) → ((𝑊 ↾ (V ∖ {𝐷}))‘(𝐸‘ndx)) = (𝑊‘(𝐸‘ndx))) | |
| 14 | 10, 13 | ax-mp 5 | . . 3 ⊢ ((𝑊 ↾ (V ∖ {𝐷}))‘(𝐸‘ndx)) = (𝑊‘(𝐸‘ndx)) | 
| 15 | 4, 12, 14 | 3eqtr3g 2252 | . 2 ⊢ ((𝑊 ∈ 𝐴 ∧ 𝐶 ∈ 𝑉) → ((𝑊 sSet 〈𝐷, 𝐶〉)‘(𝐸‘ndx)) = (𝑊‘(𝐸‘ndx))) | 
| 16 | 5 | simpli 111 | . . 3 ⊢ 𝐸 = Slot (𝐸‘ndx) | 
| 17 | setsex 12710 | . . . 4 ⊢ ((𝑊 ∈ 𝐴 ∧ 𝐷 ∈ ℕ ∧ 𝐶 ∈ 𝑉) → (𝑊 sSet 〈𝐷, 𝐶〉) ∈ V) | |
| 18 | 1, 17 | mp3an2 1336 | . . 3 ⊢ ((𝑊 ∈ 𝐴 ∧ 𝐶 ∈ 𝑉) → (𝑊 sSet 〈𝐷, 𝐶〉) ∈ V) | 
| 19 | 6 | a1i 9 | . . 3 ⊢ ((𝑊 ∈ 𝐴 ∧ 𝐶 ∈ 𝑉) → (𝐸‘ndx) ∈ ℕ) | 
| 20 | 16, 18, 19 | strnfvnd 12698 | . 2 ⊢ ((𝑊 ∈ 𝐴 ∧ 𝐶 ∈ 𝑉) → (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉)) = ((𝑊 sSet 〈𝐷, 𝐶〉)‘(𝐸‘ndx))) | 
| 21 | simpl 109 | . . 3 ⊢ ((𝑊 ∈ 𝐴 ∧ 𝐶 ∈ 𝑉) → 𝑊 ∈ 𝐴) | |
| 22 | 16, 21, 19 | strnfvnd 12698 | . 2 ⊢ ((𝑊 ∈ 𝐴 ∧ 𝐶 ∈ 𝑉) → (𝐸‘𝑊) = (𝑊‘(𝐸‘ndx))) | 
| 23 | 15, 20, 22 | 3eqtr4rd 2240 | 1 ⊢ ((𝑊 ∈ 𝐴 ∧ 𝐶 ∈ 𝑉) → (𝐸‘𝑊) = (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉))) | 
| Colors of variables: wff set class | 
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1364 ∈ wcel 2167 ≠ wne 2367 Vcvv 2763 ∖ cdif 3154 {csn 3622 〈cop 3625 ↾ cres 4665 ‘cfv 5258 (class class class)co 5922 ℕcn 8990 ndxcnx 12675 sSet csts 12676 Slot cslot 12677 | 
| 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-in1 615 ax-in2 616 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 4151 ax-pow 4207 ax-pr 4242 ax-un 4468 ax-setind 4573 | 
| This theorem depends on definitions: df-bi 117 df-3an 982 df-tru 1367 df-fal 1370 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-ne 2368 df-ral 2480 df-rex 2481 df-rab 2484 df-v 2765 df-sbc 2990 df-dif 3159 df-un 3161 df-in 3163 df-ss 3170 df-nul 3451 df-pw 3607 df-sn 3628 df-pr 3629 df-op 3631 df-uni 3840 df-br 4034 df-opab 4095 df-mpt 4096 df-id 4328 df-xp 4669 df-rel 4670 df-cnv 4671 df-co 4672 df-dm 4673 df-rn 4674 df-res 4675 df-iota 5219 df-fun 5260 df-fv 5266 df-ov 5925 df-oprab 5926 df-mpo 5927 df-slot 12682 df-sets 12685 | 
| This theorem is referenced by: resseqnbasd 12751 mgpbasg 13482 mgpscag 13483 mgptsetg 13484 mgpdsg 13486 opprsllem 13630 rmodislmod 13907 sralemg 13994 srascag 13998 sravscag 13999 zlmlemg 14184 zlmsca 14188 znbaslemnn 14195 setsmsbasg 14715 setsmsdsg 14716 | 
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