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Mirrors > Home > MPE Home > Th. List > prmdivdiv | Structured version Visualization version GIF version |
Description: The (modular) inverse of the inverse of a number is itself. (Contributed by Mario Carneiro, 24-Jan-2015.) |
Ref | Expression |
---|---|
prmdiv.1 | ⊢ 𝑅 = ((𝐴↑(𝑃 − 2)) mod 𝑃) |
Ref | Expression |
---|---|
prmdivdiv | ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝐴 = ((𝑅↑(𝑃 − 2)) mod 𝑃)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fz1ssfz0 13281 | . . 3 ⊢ (1...(𝑃 − 1)) ⊆ (0...(𝑃 − 1)) | |
2 | simpr 484 | . . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝐴 ∈ (1...(𝑃 − 1))) | |
3 | 1, 2 | sselid 3915 | . 2 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝐴 ∈ (0...(𝑃 − 1))) |
4 | simpl 482 | . . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝑃 ∈ ℙ) | |
5 | elfznn 13214 | . . . . . . 7 ⊢ (𝐴 ∈ (1...(𝑃 − 1)) → 𝐴 ∈ ℕ) | |
6 | 5 | adantl 481 | . . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝐴 ∈ ℕ) |
7 | 6 | nnzd 12354 | . . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝐴 ∈ ℤ) |
8 | prmnn 16307 | . . . . . 6 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ) | |
9 | fzm1ndvds 15959 | . . . . . 6 ⊢ ((𝑃 ∈ ℕ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → ¬ 𝑃 ∥ 𝐴) | |
10 | 8, 9 | sylan 579 | . . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → ¬ 𝑃 ∥ 𝐴) |
11 | prmdiv.1 | . . . . . 6 ⊢ 𝑅 = ((𝐴↑(𝑃 − 2)) mod 𝑃) | |
12 | 11 | prmdiv 16414 | . . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ ∧ ¬ 𝑃 ∥ 𝐴) → (𝑅 ∈ (1...(𝑃 − 1)) ∧ 𝑃 ∥ ((𝐴 · 𝑅) − 1))) |
13 | 4, 7, 10, 12 | syl3anc 1369 | . . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → (𝑅 ∈ (1...(𝑃 − 1)) ∧ 𝑃 ∥ ((𝐴 · 𝑅) − 1))) |
14 | 13 | simprd 495 | . . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝑃 ∥ ((𝐴 · 𝑅) − 1)) |
15 | 6 | nncnd 11919 | . . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝐴 ∈ ℂ) |
16 | 13 | simpld 494 | . . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝑅 ∈ (1...(𝑃 − 1))) |
17 | elfznn 13214 | . . . . . . 7 ⊢ (𝑅 ∈ (1...(𝑃 − 1)) → 𝑅 ∈ ℕ) | |
18 | 16, 17 | syl 17 | . . . . . 6 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝑅 ∈ ℕ) |
19 | 18 | nncnd 11919 | . . . . 5 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝑅 ∈ ℂ) |
20 | 15, 19 | mulcomd 10927 | . . . 4 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → (𝐴 · 𝑅) = (𝑅 · 𝐴)) |
21 | 20 | oveq1d 7270 | . . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → ((𝐴 · 𝑅) − 1) = ((𝑅 · 𝐴) − 1)) |
22 | 14, 21 | breqtrd 5096 | . 2 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝑃 ∥ ((𝑅 · 𝐴) − 1)) |
23 | 16 | elfzelzd 13186 | . . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝑅 ∈ ℤ) |
24 | fzm1ndvds 15959 | . . . 4 ⊢ ((𝑃 ∈ ℕ ∧ 𝑅 ∈ (1...(𝑃 − 1))) → ¬ 𝑃 ∥ 𝑅) | |
25 | 8, 16, 24 | syl2an2r 681 | . . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → ¬ 𝑃 ∥ 𝑅) |
26 | eqid 2738 | . . . 4 ⊢ ((𝑅↑(𝑃 − 2)) mod 𝑃) = ((𝑅↑(𝑃 − 2)) mod 𝑃) | |
27 | 26 | prmdiveq 16415 | . . 3 ⊢ ((𝑃 ∈ ℙ ∧ 𝑅 ∈ ℤ ∧ ¬ 𝑃 ∥ 𝑅) → ((𝐴 ∈ (0...(𝑃 − 1)) ∧ 𝑃 ∥ ((𝑅 · 𝐴) − 1)) ↔ 𝐴 = ((𝑅↑(𝑃 − 2)) mod 𝑃))) |
28 | 4, 23, 25, 27 | syl3anc 1369 | . 2 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → ((𝐴 ∈ (0...(𝑃 − 1)) ∧ 𝑃 ∥ ((𝑅 · 𝐴) − 1)) ↔ 𝐴 = ((𝑅↑(𝑃 − 2)) mod 𝑃))) |
29 | 3, 22, 28 | mpbi2and 708 | 1 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ (1...(𝑃 − 1))) → 𝐴 = ((𝑅↑(𝑃 − 2)) mod 𝑃)) |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 395 = wceq 1539 ∈ wcel 2108 class class class wbr 5070 (class class class)co 7255 0cc0 10802 1c1 10803 · cmul 10807 − cmin 11135 ℕcn 11903 2c2 11958 ℤcz 12249 ...cfz 13168 mod cmo 13517 ↑cexp 13710 ∥ cdvds 15891 ℙcprime 16304 |
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-rep 5205 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 ax-pre-sup 10880 |
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-rmo 3071 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-int 4877 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-1o 8267 df-2o 8268 df-oadd 8271 df-er 8456 df-map 8575 df-en 8692 df-dom 8693 df-sdom 8694 df-fin 8695 df-sup 9131 df-inf 9132 df-dju 9590 df-card 9628 df-pnf 10942 df-mnf 10943 df-xr 10944 df-ltxr 10945 df-le 10946 df-sub 11137 df-neg 11138 df-div 11563 df-nn 11904 df-2 11966 df-3 11967 df-n0 12164 df-xnn0 12236 df-z 12250 df-uz 12512 df-rp 12660 df-fz 13169 df-fzo 13312 df-fl 13440 df-mod 13518 df-seq 13650 df-exp 13711 df-hash 13973 df-cj 14738 df-re 14739 df-im 14740 df-sqrt 14874 df-abs 14875 df-dvds 15892 df-gcd 16130 df-prm 16305 df-phi 16395 |
This theorem is referenced by: wilthlem2 26123 |
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