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| Mirrors > Home > MPE Home > Th. List > setsnid | Structured version Visualization version GIF version | ||
| Description: Value of the structure replacement function at an untouched index. (Contributed by Mario Carneiro, 1-Dec-2014.) (Revised by Mario Carneiro, 30-Apr-2015.) (Proof shortened by AV, 7-Nov-2024.) |
| Ref | Expression |
|---|---|
| setsid.e | ⊢ 𝐸 = Slot (𝐸‘ndx) |
| setsnid.n | ⊢ (𝐸‘ndx) ≠ 𝐷 |
| Ref | Expression |
|---|---|
| setsnid | ⊢ (𝐸‘𝑊) = (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | setsid.e | . . . 4 ⊢ 𝐸 = Slot (𝐸‘ndx) | |
| 2 | id 23 | . . . 4 ⊢ (𝑊 ∈ V → 𝑊 ∈ V) | |
| 3 | 1, 2 | strfvnd 17278 | . . 3 ⊢ (𝑊 ∈ V → (𝐸‘𝑊) = (𝑊‘(𝐸‘ndx))) |
| 4 | ovex 7447 | . . . . 5 ⊢ (𝑊 sSet 〈𝐷, 𝐶〉) ∈ V | |
| 5 | 4, 1 | strfvn 17279 | . . . 4 ⊢ (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉)) = ((𝑊 sSet 〈𝐷, 𝐶〉)‘(𝐸‘ndx)) |
| 6 | setsres 17271 | . . . . . 6 ⊢ (𝑊 ∈ V → ((𝑊 sSet 〈𝐷, 𝐶〉) ↾ (V ∖ {𝐷})) = (𝑊 ↾ (V ∖ {𝐷}))) | |
| 7 | 6 | fveq1d 6881 | . . . . 5 ⊢ (𝑊 ∈ V → (((𝑊 sSet 〈𝐷, 𝐶〉) ↾ (V ∖ {𝐷}))‘(𝐸‘ndx)) = ((𝑊 ↾ (V ∖ {𝐷}))‘(𝐸‘ndx))) |
| 8 | fvex 6892 | . . . . . . 7 ⊢ (𝐸‘ndx) ∈ V | |
| 9 | setsnid.n | . . . . . . 7 ⊢ (𝐸‘ndx) ≠ 𝐷 | |
| 10 | eldifsn 4748 | . . . . . . 7 ⊢ ((𝐸‘ndx) ∈ (V ∖ {𝐷}) ↔ ((𝐸‘ndx) ∈ V ∧ (𝐸‘ndx) ≠ 𝐷)) | |
| 11 | 8, 9, 10 | mpbir2an 724 | . . . . . 6 ⊢ (𝐸‘ndx) ∈ (V ∖ {𝐷}) |
| 12 | fvres 6898 | . . . . . 6 ⊢ ((𝐸‘ndx) ∈ (V ∖ {𝐷}) → (((𝑊 sSet 〈𝐷, 𝐶〉) ↾ (V ∖ {𝐷}))‘(𝐸‘ndx)) = ((𝑊 sSet 〈𝐷, 𝐶〉)‘(𝐸‘ndx))) | |
| 13 | 11, 12 | ax-mp 5 | . . . . 5 ⊢ (((𝑊 sSet 〈𝐷, 𝐶〉) ↾ (V ∖ {𝐷}))‘(𝐸‘ndx)) = ((𝑊 sSet 〈𝐷, 𝐶〉)‘(𝐸‘ndx)) |
| 14 | fvres 6898 | . . . . . 6 ⊢ ((𝐸‘ndx) ∈ (V ∖ {𝐷}) → ((𝑊 ↾ (V ∖ {𝐷}))‘(𝐸‘ndx)) = (𝑊‘(𝐸‘ndx))) | |
| 15 | 11, 14 | ax-mp 5 | . . . . 5 ⊢ ((𝑊 ↾ (V ∖ {𝐷}))‘(𝐸‘ndx)) = (𝑊‘(𝐸‘ndx)) |
| 16 | 7, 13, 15 | 3eqtr3g 2818 | . . . 4 ⊢ (𝑊 ∈ V → ((𝑊 sSet 〈𝐷, 𝐶〉)‘(𝐸‘ndx)) = (𝑊‘(𝐸‘ndx))) |
| 17 | 5, 16 | eqtrid 2807 | . . 3 ⊢ (𝑊 ∈ V → (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉)) = (𝑊‘(𝐸‘ndx))) |
| 18 | 3, 17 | eqtr4d 2798 | . 2 ⊢ (𝑊 ∈ V → (𝐸‘𝑊) = (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉))) |
| 19 | 1 | str0 17282 | . . . 4 ⊢ ∅ = (𝐸‘∅) |
| 20 | 19 | eqcomi 2769 | . . 3 ⊢ (𝐸‘∅) = ∅ |
| 21 | eqid 2760 | . . 3 ⊢ (𝑊 sSet 〈𝐷, 𝐶〉) = (𝑊 sSet 〈𝐷, 𝐶〉) | |
| 22 | reldmsets 17258 | . . 3 ⊢ Rel dom sSet | |
| 23 | 20, 21, 22 | oveqprc 17285 | . 2 ⊢ (¬ 𝑊 ∈ V → (𝐸‘𝑊) = (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉))) |
| 24 | 18, 23 | pm2.61i 184 | 1 ⊢ (𝐸‘𝑊) = (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: = wceq 1570 ∈ wcel 2145 ≠ wne 2955 Vcvv 3450 ∖ cdif 3896 ∅c0 4279 {csn 4584 〈cop 4590 ↾ cres 5657 ‘cfv 6533 (class class class)co 7414 sSet csts 17256 Slot cslot 17274 ndxcnx 17286 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pr 5398 ax-un 7737 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-sbc 3740 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-id 5550 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-res 5667 df-iota 6489 df-fun 6535 df-fv 6541 df-ov 7417 df-oprab 7418 df-mpo 7419 df-sets 17257 df-slot 17275 |
| This theorem is used by: resseqnbas 17335 oppchomfval 17803 oppcbas 17807 rescbas 17919 rescco 17922 rescabs 17923 odubas 18380 setsplusg 19478 opprlem 20484 rmodislmod 21115 sralem 21361 srasca 21365 sravsca 21366 zlmlem 21730 zlmsca 21734 znbaslem 21752 thlbas 21910 thlle 21911 opsrbaslem 22266 matbas 22636 matplusg 22637 matsca 22638 matvsca 22639 tuslem 24493 setsmsbas 24702 setsmsds 24703 tnglem 24867 tngds 24875 ttgval 29332 ttglem 29333 cchhllem 29344 setsvtx 29493 resvlem 33774 zlmds 34473 zlmtset 34474 hlhilslem 42812 mnringnmulrd 45053 cznrnglem 49175 cznabel 49176 cznrng 49177 prstcnidlem 50479 prstcnid 50480 |
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