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Mirrors > Home > ILE Home > Th. List > slotslfn | GIF version |
Description: A slot is a function on sets, treated as structures. (Contributed by Mario Carneiro, 22-Sep-2015.) (Revised by Jim Kingdon, 10-Feb-2023.) |
Ref | Expression |
---|---|
slotslfn.e | ⊢ (𝐸 = Slot (𝐸‘ndx) ∧ (𝐸‘ndx) ∈ ℕ) |
Ref | Expression |
---|---|
slotslfn | ⊢ 𝐸 Fn V |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | vex 2733 | . . 3 ⊢ 𝑥 ∈ V | |
2 | slotslfn.e | . . . 4 ⊢ (𝐸 = Slot (𝐸‘ndx) ∧ (𝐸‘ndx) ∈ ℕ) | |
3 | 2 | simpri 112 | . . 3 ⊢ (𝐸‘ndx) ∈ ℕ |
4 | 1, 3 | fvex 5516 | . 2 ⊢ (𝑥‘(𝐸‘ndx)) ∈ V |
5 | 2 | simpli 110 | . . 3 ⊢ 𝐸 = Slot (𝐸‘ndx) |
6 | df-slot 12420 | . . 3 ⊢ Slot (𝐸‘ndx) = (𝑥 ∈ V ↦ (𝑥‘(𝐸‘ndx))) | |
7 | 5, 6 | eqtri 2191 | . 2 ⊢ 𝐸 = (𝑥 ∈ V ↦ (𝑥‘(𝐸‘ndx))) |
8 | 4, 7 | fnmpti 5326 | 1 ⊢ 𝐸 Fn V |
Colors of variables: wff set class |
Syntax hints: ∧ wa 103 = wceq 1348 ∈ wcel 2141 Vcvv 2730 ↦ cmpt 4050 Fn wfn 5193 ‘cfv 5198 ℕcn 8878 ndxcnx 12413 Slot cslot 12415 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-pow 4160 ax-pr 4194 ax-un 4418 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ral 2453 df-rex 2454 df-v 2732 df-un 3125 df-in 3127 df-ss 3134 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-br 3990 df-opab 4051 df-mpt 4052 df-id 4278 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-iota 5160 df-fun 5200 df-fn 5201 df-fv 5206 df-slot 12420 |
This theorem is referenced by: slotex 12443 basfn 12473 topontopn 12829 |
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