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Mirrors > Home > MPE Home > Th. List > clwlkclwwlklem2fv1 | Structured version Visualization version GIF version |
Description: Lemma 4a for clwlkclwwlklem2a 28263. (Contributed by Alexander van der Vekens, 22-Jun-2018.) |
Ref | Expression |
---|---|
clwlkclwwlklem2.f | ⊢ 𝐹 = (𝑥 ∈ (0..^((♯‘𝑃) − 1)) ↦ if(𝑥 < ((♯‘𝑃) − 2), (◡𝐸‘{(𝑃‘𝑥), (𝑃‘(𝑥 + 1))}), (◡𝐸‘{(𝑃‘𝑥), (𝑃‘0)}))) |
Ref | Expression |
---|---|
clwlkclwwlklem2fv1 | ⊢ (((♯‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((♯‘𝑃) − 2))) → (𝐹‘𝐼) = (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))})) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | clwlkclwwlklem2.f | . 2 ⊢ 𝐹 = (𝑥 ∈ (0..^((♯‘𝑃) − 1)) ↦ if(𝑥 < ((♯‘𝑃) − 2), (◡𝐸‘{(𝑃‘𝑥), (𝑃‘(𝑥 + 1))}), (◡𝐸‘{(𝑃‘𝑥), (𝑃‘0)}))) | |
2 | breq1 5073 | . . . 4 ⊢ (𝑥 = 𝐼 → (𝑥 < ((♯‘𝑃) − 2) ↔ 𝐼 < ((♯‘𝑃) − 2))) | |
3 | fveq2 6756 | . . . . . 6 ⊢ (𝑥 = 𝐼 → (𝑃‘𝑥) = (𝑃‘𝐼)) | |
4 | fvoveq1 7278 | . . . . . 6 ⊢ (𝑥 = 𝐼 → (𝑃‘(𝑥 + 1)) = (𝑃‘(𝐼 + 1))) | |
5 | 3, 4 | preq12d 4674 | . . . . 5 ⊢ (𝑥 = 𝐼 → {(𝑃‘𝑥), (𝑃‘(𝑥 + 1))} = {(𝑃‘𝐼), (𝑃‘(𝐼 + 1))}) |
6 | 5 | fveq2d 6760 | . . . 4 ⊢ (𝑥 = 𝐼 → (◡𝐸‘{(𝑃‘𝑥), (𝑃‘(𝑥 + 1))}) = (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))})) |
7 | 3 | preq1d 4672 | . . . . 5 ⊢ (𝑥 = 𝐼 → {(𝑃‘𝑥), (𝑃‘0)} = {(𝑃‘𝐼), (𝑃‘0)}) |
8 | 7 | fveq2d 6760 | . . . 4 ⊢ (𝑥 = 𝐼 → (◡𝐸‘{(𝑃‘𝑥), (𝑃‘0)}) = (◡𝐸‘{(𝑃‘𝐼), (𝑃‘0)})) |
9 | 2, 6, 8 | ifbieq12d 4484 | . . 3 ⊢ (𝑥 = 𝐼 → if(𝑥 < ((♯‘𝑃) − 2), (◡𝐸‘{(𝑃‘𝑥), (𝑃‘(𝑥 + 1))}), (◡𝐸‘{(𝑃‘𝑥), (𝑃‘0)})) = if(𝐼 < ((♯‘𝑃) − 2), (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))}), (◡𝐸‘{(𝑃‘𝐼), (𝑃‘0)}))) |
10 | elfzolt2 13325 | . . . . 5 ⊢ (𝐼 ∈ (0..^((♯‘𝑃) − 2)) → 𝐼 < ((♯‘𝑃) − 2)) | |
11 | 10 | adantl 481 | . . . 4 ⊢ (((♯‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((♯‘𝑃) − 2))) → 𝐼 < ((♯‘𝑃) − 2)) |
12 | 11 | iftrued 4464 | . . 3 ⊢ (((♯‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((♯‘𝑃) − 2))) → if(𝐼 < ((♯‘𝑃) − 2), (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))}), (◡𝐸‘{(𝑃‘𝐼), (𝑃‘0)})) = (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))})) |
13 | 9, 12 | sylan9eqr 2801 | . 2 ⊢ ((((♯‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((♯‘𝑃) − 2))) ∧ 𝑥 = 𝐼) → if(𝑥 < ((♯‘𝑃) − 2), (◡𝐸‘{(𝑃‘𝑥), (𝑃‘(𝑥 + 1))}), (◡𝐸‘{(𝑃‘𝑥), (𝑃‘0)})) = (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))})) |
14 | nn0z 12273 | . . . . . 6 ⊢ ((♯‘𝑃) ∈ ℕ0 → (♯‘𝑃) ∈ ℤ) | |
15 | 2z 12282 | . . . . . . 7 ⊢ 2 ∈ ℤ | |
16 | 15 | a1i 11 | . . . . . 6 ⊢ ((♯‘𝑃) ∈ ℕ0 → 2 ∈ ℤ) |
17 | 14, 16 | zsubcld 12360 | . . . . 5 ⊢ ((♯‘𝑃) ∈ ℕ0 → ((♯‘𝑃) − 2) ∈ ℤ) |
18 | peano2zm 12293 | . . . . . 6 ⊢ ((♯‘𝑃) ∈ ℤ → ((♯‘𝑃) − 1) ∈ ℤ) | |
19 | 14, 18 | syl 17 | . . . . 5 ⊢ ((♯‘𝑃) ∈ ℕ0 → ((♯‘𝑃) − 1) ∈ ℤ) |
20 | 1red 10907 | . . . . . 6 ⊢ ((♯‘𝑃) ∈ ℕ0 → 1 ∈ ℝ) | |
21 | 2re 11977 | . . . . . . 7 ⊢ 2 ∈ ℝ | |
22 | 21 | a1i 11 | . . . . . 6 ⊢ ((♯‘𝑃) ∈ ℕ0 → 2 ∈ ℝ) |
23 | nn0re 12172 | . . . . . 6 ⊢ ((♯‘𝑃) ∈ ℕ0 → (♯‘𝑃) ∈ ℝ) | |
24 | 1le2 12112 | . . . . . . 7 ⊢ 1 ≤ 2 | |
25 | 24 | a1i 11 | . . . . . 6 ⊢ ((♯‘𝑃) ∈ ℕ0 → 1 ≤ 2) |
26 | 20, 22, 23, 25 | lesub2dd 11522 | . . . . 5 ⊢ ((♯‘𝑃) ∈ ℕ0 → ((♯‘𝑃) − 2) ≤ ((♯‘𝑃) − 1)) |
27 | eluz2 12517 | . . . . 5 ⊢ (((♯‘𝑃) − 1) ∈ (ℤ≥‘((♯‘𝑃) − 2)) ↔ (((♯‘𝑃) − 2) ∈ ℤ ∧ ((♯‘𝑃) − 1) ∈ ℤ ∧ ((♯‘𝑃) − 2) ≤ ((♯‘𝑃) − 1))) | |
28 | 17, 19, 26, 27 | syl3anbrc 1341 | . . . 4 ⊢ ((♯‘𝑃) ∈ ℕ0 → ((♯‘𝑃) − 1) ∈ (ℤ≥‘((♯‘𝑃) − 2))) |
29 | fzoss2 13343 | . . . 4 ⊢ (((♯‘𝑃) − 1) ∈ (ℤ≥‘((♯‘𝑃) − 2)) → (0..^((♯‘𝑃) − 2)) ⊆ (0..^((♯‘𝑃) − 1))) | |
30 | 28, 29 | syl 17 | . . 3 ⊢ ((♯‘𝑃) ∈ ℕ0 → (0..^((♯‘𝑃) − 2)) ⊆ (0..^((♯‘𝑃) − 1))) |
31 | 30 | sselda 3917 | . 2 ⊢ (((♯‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((♯‘𝑃) − 2))) → 𝐼 ∈ (0..^((♯‘𝑃) − 1))) |
32 | fvexd 6771 | . 2 ⊢ (((♯‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((♯‘𝑃) − 2))) → (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))}) ∈ V) | |
33 | 1, 13, 31, 32 | fvmptd2 6865 | 1 ⊢ (((♯‘𝑃) ∈ ℕ0 ∧ 𝐼 ∈ (0..^((♯‘𝑃) − 2))) → (𝐹‘𝐼) = (◡𝐸‘{(𝑃‘𝐼), (𝑃‘(𝐼 + 1))})) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∧ wa 395 = wceq 1539 ∈ wcel 2108 Vcvv 3422 ⊆ wss 3883 ifcif 4456 {cpr 4560 class class class wbr 5070 ↦ cmpt 5153 ◡ccnv 5579 ‘cfv 6418 (class class class)co 7255 ℝcr 10801 0cc0 10802 1c1 10803 + caddc 10805 < clt 10940 ≤ cle 10941 − cmin 11135 2c2 11958 ℕ0cn0 12163 ℤcz 12249 ℤ≥cuz 12511 ..^cfzo 13311 ♯chash 13972 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 ax-cnex 10858 ax-resscn 10859 ax-1cn 10860 ax-icn 10861 ax-addcl 10862 ax-addrcl 10863 ax-mulcl 10864 ax-mulrcl 10865 ax-mulcom 10866 ax-addass 10867 ax-mulass 10868 ax-distr 10869 ax-i2m1 10870 ax-1ne0 10871 ax-1rid 10872 ax-rnegex 10873 ax-rrecex 10874 ax-cnre 10875 ax-pre-lttri 10876 ax-pre-lttrn 10877 ax-pre-ltadd 10878 ax-pre-mulgt0 10879 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-nel 3049 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-csb 3829 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-iun 4923 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-pred 6191 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-riota 7212 df-ov 7258 df-oprab 7259 df-mpo 7260 df-om 7688 df-1st 7804 df-2nd 7805 df-frecs 8068 df-wrecs 8099 df-recs 8173 df-rdg 8212 df-er 8456 df-en 8692 df-dom 8693 df-sdom 8694 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-nn 11904 df-2 11966 df-n0 12164 df-z 12250 df-uz 12512 df-fz 13169 df-fzo 13312 |
This theorem is referenced by: clwlkclwwlklem2a4 28262 |
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