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Mirrors > Home > MPE Home > Th. List > Mathboxes > 1wlkiswwlks2lem2 | Structured version Visualization version GIF version |
Description: Lemma 2 for 1wlkiswwlks2 41072. (Contributed by Alexander van der Vekens, 20-Jul-2018.) |
Ref | Expression |
---|---|
1wlkiswwlks2lem.f | ⊢ 𝐹 = (𝑥 ∈ (0..^((#‘𝑃) − 1)) ↦ (◡𝐸‘{(𝑃‘𝑥), (𝑃‘(𝑥 + 1))})) |
Ref | Expression |
---|---|
1wlkiswwlks2lem2 | ⊢ (((#‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((#‘𝑃) − 1))) → (𝐹‘𝐼) = (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))})) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1wlkiswwlks2lem.f | . . 3 ⊢ 𝐹 = (𝑥 ∈ (0..^((#‘𝑃) − 1)) ↦ (◡𝐸‘{(𝑃‘𝑥), (𝑃‘(𝑥 + 1))})) | |
2 | 1 | a1i 11 | . 2 ⊢ (((#‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((#‘𝑃) − 1))) → 𝐹 = (𝑥 ∈ (0..^((#‘𝑃) − 1)) ↦ (◡𝐸‘{(𝑃‘𝑥), (𝑃‘(𝑥 + 1))}))) |
3 | fveq2 6103 | . . . . 5 ⊢ (𝑥 = 𝐼 → (𝑃‘𝑥) = (𝑃‘𝐼)) | |
4 | oveq1 6556 | . . . . . 6 ⊢ (𝑥 = 𝐼 → (𝑥 + 1) = (𝐼 + 1)) | |
5 | 4 | fveq2d 6107 | . . . . 5 ⊢ (𝑥 = 𝐼 → (𝑃‘(𝑥 + 1)) = (𝑃‘(𝐼 + 1))) |
6 | 3, 5 | preq12d 4220 | . . . 4 ⊢ (𝑥 = 𝐼 → {(𝑃‘𝑥), (𝑃‘(𝑥 + 1))} = {(𝑃‘𝐼), (𝑃‘(𝐼 + 1))}) |
7 | 6 | fveq2d 6107 | . . 3 ⊢ (𝑥 = 𝐼 → (◡𝐸‘{(𝑃‘𝑥), (𝑃‘(𝑥 + 1))}) = (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))})) |
8 | 7 | adantl 481 | . 2 ⊢ ((((#‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((#‘𝑃) − 1))) ∧ 𝑥 = 𝐼) → (◡𝐸‘{(𝑃‘𝑥), (𝑃‘(𝑥 + 1))}) = (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))})) |
9 | simpr 476 | . 2 ⊢ (((#‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((#‘𝑃) − 1))) → 𝐼 ∈ (0..^((#‘𝑃) − 1))) | |
10 | fvex 6113 | . . 3 ⊢ (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))}) ∈ V | |
11 | 10 | a1i 11 | . 2 ⊢ (((#‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((#‘𝑃) − 1))) → (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))}) ∈ V) |
12 | 2, 8, 9, 11 | fvmptd 6197 | 1 ⊢ (((#‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((#‘𝑃) − 1))) → (𝐹‘𝐼) = (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))})) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 383 = wceq 1475 ∈ wcel 1977 Vcvv 3173 {cpr 4127 ↦ cmpt 4643 ◡ccnv 5037 ‘cfv 5804 (class class class)co 6549 0cc0 9815 1c1 9816 + caddc 9818 − cmin 10145 ℕ0cn0 11169 ..^cfzo 12334 #chash 12979 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pr 4833 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-nul 3875 df-if 4037 df-sn 4126 df-pr 4128 df-op 4132 df-uni 4373 df-br 4584 df-opab 4644 df-mpt 4645 df-id 4953 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-iota 5768 df-fun 5806 df-fv 5812 df-ov 6552 |
This theorem is referenced by: (None) |
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