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 31368 | . . 3 ⊢ (𝐼 ∈ 𝐷 → (𝑃‘1) = 𝐼) |
4 | 3 | fveq2d 6778 | . 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 31370 | . . . 4 ⊢ (𝐼 ∈ 𝐷 → 𝑃 ∈ 𝐵) |
8 | 5, 6 | symgbasf1o 18982 | . . . 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 13261 | . . . . 5 ⊢ (𝐼 ∈ (1...𝑁) → 𝑁 ∈ (ℤ≥‘1)) | |
11 | 10, 1 | eleq2s 2857 | . . . 4 ⊢ (𝐼 ∈ 𝐷 → 𝑁 ∈ (ℤ≥‘1)) |
12 | eluzfz1 13263 | . . . . 5 ⊢ (𝑁 ∈ (ℤ≥‘1) → 1 ∈ (1...𝑁)) | |
13 | 12, 1 | eleqtrrdi 2850 | . . . 4 ⊢ (𝑁 ∈ (ℤ≥‘1) → 1 ∈ 𝐷) |
14 | 11, 13 | syl 17 | . . 3 ⊢ (𝐼 ∈ 𝐷 → 1 ∈ 𝐷) |
15 | f1ocnvfv1 7148 | . . 3 ⊢ ((𝑃:𝐷–1-1-onto→𝐷 ∧ 1 ∈ 𝐷) → (◡𝑃‘(𝑃‘1)) = 1) | |
16 | 9, 14, 15 | syl2anc 584 | . 2 ⊢ (𝐼 ∈ 𝐷 → (◡𝑃‘(𝑃‘1)) = 1) |
17 | 4, 16 | eqtr3d 2780 | 1 ⊢ (𝐼 ∈ 𝐷 → (◡𝑃‘𝐼) = 1) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1539 ∈ wcel 2106 ifcif 4459 class class class wbr 5074 ↦ cmpt 5157 ◡ccnv 5588 –1-1-onto→wf1o 6432 ‘cfv 6433 (class class class)co 7275 1c1 10872 ≤ cle 11010 − cmin 11205 ℤ≥cuz 12582 ...cfz 13239 Basecbs 16912 SymGrpcsymg 18974 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2709 ax-rep 5209 ax-sep 5223 ax-nul 5230 ax-pow 5288 ax-pr 5352 ax-un 7588 ax-cnex 10927 ax-resscn 10928 ax-1cn 10929 ax-icn 10930 ax-addcl 10931 ax-addrcl 10932 ax-mulcl 10933 ax-mulrcl 10934 ax-mulcom 10935 ax-addass 10936 ax-mulass 10937 ax-distr 10938 ax-i2m1 10939 ax-1ne0 10940 ax-1rid 10941 ax-rnegex 10942 ax-rrecex 10943 ax-cnre 10944 ax-pre-lttri 10945 ax-pre-lttrn 10946 ax-pre-ltadd 10947 ax-pre-mulgt0 10948 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-nf 1787 df-sb 2068 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2816 df-nfc 2889 df-ne 2944 df-nel 3050 df-ral 3069 df-rex 3070 df-reu 3072 df-rab 3073 df-v 3434 df-sbc 3717 df-csb 3833 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-pss 3906 df-nul 4257 df-if 4460 df-pw 4535 df-sn 4562 df-pr 4564 df-tp 4566 df-op 4568 df-uni 4840 df-iun 4926 df-br 5075 df-opab 5137 df-mpt 5158 df-tr 5192 df-id 5489 df-eprel 5495 df-po 5503 df-so 5504 df-fr 5544 df-we 5546 df-xp 5595 df-rel 5596 df-cnv 5597 df-co 5598 df-dm 5599 df-rn 5600 df-res 5601 df-ima 5602 df-pred 6202 df-ord 6269 df-on 6270 df-lim 6271 df-suc 6272 df-iota 6391 df-fun 6435 df-fn 6436 df-f 6437 df-f1 6438 df-fo 6439 df-f1o 6440 df-fv 6441 df-riota 7232 df-ov 7278 df-oprab 7279 df-mpo 7280 df-om 7713 df-1st 7831 df-2nd 7832 df-frecs 8097 df-wrecs 8128 df-recs 8202 df-rdg 8241 df-1o 8297 df-2o 8298 df-er 8498 df-map 8617 df-en 8734 df-dom 8735 df-sdom 8736 df-fin 8737 df-pnf 11011 df-mnf 11012 df-xr 11013 df-ltxr 11014 df-le 11015 df-sub 11207 df-neg 11208 df-nn 11974 df-2 12036 df-3 12037 df-4 12038 df-5 12039 df-6 12040 df-7 12041 df-8 12042 df-9 12043 df-n0 12234 df-z 12320 df-uz 12583 df-fz 13240 df-struct 16848 df-sets 16865 df-slot 16883 df-ndx 16895 df-base 16913 df-ress 16942 df-plusg 16975 df-tset 16981 df-efmnd 18508 df-symg 18975 df-pmtr 19050 |
This theorem is referenced by: madjusmdetlem4 31780 |
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