| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 22 | . . . 4 ⊢ (𝑊 ∈ V → 𝑊 ∈ V) | |
| 3 | 1, 2 | strfvnd 17146 | . . 3 ⊢ (𝑊 ∈ V → (𝐸‘𝑊) = (𝑊‘(𝐸‘ndx))) |
| 4 | ovex 7389 | . . . . 5 ⊢ (𝑊 sSet 〈𝐷, 𝐶〉) ∈ V | |
| 5 | 4, 1 | strfvn 17147 | . . . 4 ⊢ (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉)) = ((𝑊 sSet 〈𝐷, 𝐶〉)‘(𝐸‘ndx)) |
| 6 | setsres 17139 | . . . . . 6 ⊢ (𝑊 ∈ V → ((𝑊 sSet 〈𝐷, 𝐶〉) ↾ (V ∖ {𝐷})) = (𝑊 ↾ (V ∖ {𝐷}))) | |
| 7 | 6 | fveq1d 6829 | . . . . 5 ⊢ (𝑊 ∈ V → (((𝑊 sSet 〈𝐷, 𝐶〉) ↾ (V ∖ {𝐷}))‘(𝐸‘ndx)) = ((𝑊 ↾ (V ∖ {𝐷}))‘(𝐸‘ndx))) |
| 8 | fvex 6840 | . . . . . . 7 ⊢ (𝐸‘ndx) ∈ V | |
| 9 | setsnid.n | . . . . . . 7 ⊢ (𝐸‘ndx) ≠ 𝐷 | |
| 10 | eldifsn 4719 | . . . . . . 7 ⊢ ((𝐸‘ndx) ∈ (V ∖ {𝐷}) ↔ ((𝐸‘ndx) ∈ V ∧ (𝐸‘ndx) ≠ 𝐷)) | |
| 11 | 8, 9, 10 | mpbir2an 717 | . . . . . 6 ⊢ (𝐸‘ndx) ∈ (V ∖ {𝐷}) |
| 12 | fvres 6846 | . . . . . 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 6846 | . . . . . 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 2797 | . . . 4 ⊢ (𝑊 ∈ V → ((𝑊 sSet 〈𝐷, 𝐶〉)‘(𝐸‘ndx)) = (𝑊‘(𝐸‘ndx))) |
| 17 | 5, 16 | eqtrid 2786 | . . 3 ⊢ (𝑊 ∈ V → (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉)) = (𝑊‘(𝐸‘ndx))) |
| 18 | 3, 17 | eqtr4d 2777 | . 2 ⊢ (𝑊 ∈ V → (𝐸‘𝑊) = (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉))) |
| 19 | 1 | str0 17150 | . . . 4 ⊢ ∅ = (𝐸‘∅) |
| 20 | 19 | eqcomi 2748 | . . 3 ⊢ (𝐸‘∅) = ∅ |
| 21 | eqid 2739 | . . 3 ⊢ (𝑊 sSet 〈𝐷, 𝐶〉) = (𝑊 sSet 〈𝐷, 𝐶〉) | |
| 22 | reldmsets 17126 | . . 3 ⊢ Rel dom sSet | |
| 23 | 20, 21, 22 | oveqprc 17153 | . 2 ⊢ (¬ 𝑊 ∈ V → (𝐸‘𝑊) = (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉))) |
| 24 | 18, 23 | pm2.61i 183 | 1 ⊢ (𝐸‘𝑊) = (𝐸‘(𝑊 sSet 〈𝐷, 𝐶〉)) |
| Colors of variables: wff setvar class |
| Syntax hints: = wceq 1547 ∈ wcel 2119 ≠ wne 2934 Vcvv 3431 ∖ cdif 3880 ∅c0 4261 {csn 4555 〈cop 4561 ↾ cres 5620 ‘cfv 6485 (class class class)co 7356 sSet csts 17124 Slot cslot 17142 ndxcnx 17154 |
| 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 2711 ax-sep 5218 ax-nul 5228 ax-pr 5362 ax-un 7678 |
| 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 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-ral 3054 df-rex 3064 df-rab 3392 df-v 3433 df-sbc 3724 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-opab 5135 df-mpt 5154 df-id 5513 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-res 5630 df-iota 6441 df-fun 6487 df-fv 6493 df-ov 7359 df-oprab 7360 df-mpo 7361 df-sets 17125 df-slot 17143 |
| This theorem is referenced by: resseqnbas 17203 oppchomfval 17671 oppcbas 17675 rescbas 17787 rescco 17790 rescabs 17791 odubas 18248 setsplusg 19316 opprlem 20313 rmodislmod 20920 sralem 21166 srasca 21170 sravsca 21171 zlmlem 21491 zlmsca 21495 znbaslem 21513 thlbas 21671 thlle 21672 opsrbaslem 22025 matbas 22396 matplusg 22397 matsca 22398 matvsca 22399 tuslem 24249 setsmsbas 24458 setsmsds 24459 tnglem 24623 tngds 24631 ttgval 28961 ttglem 28962 cchhllem 28973 setsvtx 29122 resvlem 33416 zlmds 34146 zlmtset 34147 hlhilslem 42430 mnringnmulrd 44658 cznrnglem 48750 cznabel 48751 cznrng 48752 prstcnidlem 50042 prstcnid 50043 |
| Copyright terms: Public domain | W3C validator |