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Mathbox for Thierry Arnoux |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > fzto1stinvn | Structured version Visualization version GIF version |
Description: Value of the inverse of our permutation 𝑃 at 𝐼. (Contributed by Thierry Arnoux, 23-Aug-2020.) |
Ref | Expression |
---|---|
psgnfzto1st.d | ⊢ 𝐷 = (1...𝑁) |
psgnfzto1st.p | ⊢ 𝑃 = (𝑖 ∈ 𝐷 ↦ if(𝑖 = 1, 𝐼, if(𝑖 ≤ 𝐼, (𝑖 − 1), 𝑖))) |
psgnfzto1st.g | ⊢ 𝐺 = (SymGrp‘𝐷) |
psgnfzto1st.b | ⊢ 𝐵 = (Base‘𝐺) |
Ref | Expression |
---|---|
fzto1stinvn | ⊢ (𝐼 ∈ 𝐷 → (◡𝑃‘𝐼) = 1) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | psgnfzto1st.d | . . . 4 ⊢ 𝐷 = (1...𝑁) | |
2 | psgnfzto1st.p | . . . 4 ⊢ 𝑃 = (𝑖 ∈ 𝐷 ↦ if(𝑖 = 1, 𝐼, if(𝑖 ≤ 𝐼, (𝑖 − 1), 𝑖))) | |
3 | 1, 2 | fzto1stfv1 30793 | . . 3 ⊢ (𝐼 ∈ 𝐷 → (𝑃‘1) = 𝐼) |
4 | 3 | fveq2d 6649 | . 2 ⊢ (𝐼 ∈ 𝐷 → (◡𝑃‘(𝑃‘1)) = (◡𝑃‘𝐼)) |
5 | psgnfzto1st.g | . . . . 5 ⊢ 𝐺 = (SymGrp‘𝐷) | |
6 | psgnfzto1st.b | . . . . 5 ⊢ 𝐵 = (Base‘𝐺) | |
7 | 1, 2, 5, 6 | fzto1st 30795 | . . . 4 ⊢ (𝐼 ∈ 𝐷 → 𝑃 ∈ 𝐵) |
8 | 5, 6 | symgbasf1o 18495 | . . . 4 ⊢ (𝑃 ∈ 𝐵 → 𝑃:𝐷–1-1-onto→𝐷) |
9 | 7, 8 | syl 17 | . . 3 ⊢ (𝐼 ∈ 𝐷 → 𝑃:𝐷–1-1-onto→𝐷) |
10 | elfzuz2 12907 | . . . . 5 ⊢ (𝐼 ∈ (1...𝑁) → 𝑁 ∈ (ℤ≥‘1)) | |
11 | 10, 1 | eleq2s 2908 | . . . 4 ⊢ (𝐼 ∈ 𝐷 → 𝑁 ∈ (ℤ≥‘1)) |
12 | eluzfz1 12909 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘1) → 1 ∈ (1...𝑁)) | |
13 | 12, 1 | eleqtrrdi 2901 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘1) → 1 ∈ 𝐷) |
14 | 11, 13 | syl 17 | . . 3 ⊢ (𝐼 ∈ 𝐷 → 1 ∈ 𝐷) |
15 | f1ocnvfv1 7011 | . . 3 ⊢ ((𝑃:𝐷–1-1-onto→𝐷 ∧ 1 ∈ 𝐷) → (◡𝑃‘(𝑃‘1)) = 1) | |
16 | 9, 14, 15 | syl2anc 587 | . 2 ⊢ (𝐼 ∈ 𝐷 → (◡𝑃‘(𝑃‘1)) = 1) |
17 | 4, 16 | eqtr3d 2835 | 1 ⊢ (𝐼 ∈ 𝐷 → (◡𝑃‘𝐼) = 1) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1538 ∈ wcel 2111 ifcif 4425 class class class wbr 5030 ↦ cmpt 5110 ◡ccnv 5518 –1-1-onto→wf1o 6323 ‘cfv 6324 (class class class)co 7135 1c1 10527 ≤ cle 10665 − cmin 10859 ℤ≥cuz 12231 ...cfz 12885 Basecbs 16475 SymGrpcsymg 18487 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-rep 5154 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-int 4839 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-1st 7671 df-2nd 7672 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-1o 8085 df-2o 8086 df-oadd 8089 df-er 8272 df-map 8391 df-en 8493 df-dom 8494 df-sdom 8495 df-fin 8496 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-nn 11626 df-2 11688 df-3 11689 df-4 11690 df-5 11691 df-6 11692 df-7 11693 df-8 11694 df-9 11695 df-n0 11886 df-z 11970 df-uz 12232 df-fz 12886 df-struct 16477 df-ndx 16478 df-slot 16479 df-base 16481 df-sets 16482 df-ress 16483 df-plusg 16570 df-tset 16576 df-efmnd 18026 df-symg 18488 df-pmtr 18562 |
This theorem is referenced by: madjusmdetlem4 31183 |
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