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Mirrors > Home > ILE Home > Th. List > lgsprme0 | GIF version |
Description: The Legendre symbol at any prime (even at 2) is 0 iff the prime does not divide the first argument. See definition in [ApostolNT] p. 179. (Contributed by AV, 20-Jul-2021.) |
Ref | Expression |
---|---|
lgsprme0 | ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → ((𝐴 /L 𝑃) = 0 ↔ (𝐴 mod 𝑃) = 0)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | prmz 12065 | . . . 4 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℤ) | |
2 | lgscl 13709 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℤ) → (𝐴 /L 𝑃) ∈ ℤ) | |
3 | 1, 2 | sylan2 284 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → (𝐴 /L 𝑃) ∈ ℤ) |
4 | 0z 9223 | . . 3 ⊢ 0 ∈ ℤ | |
5 | zdceq 9287 | . . 3 ⊢ (((𝐴 /L 𝑃) ∈ ℤ ∧ 0 ∈ ℤ) → DECID (𝐴 /L 𝑃) = 0) | |
6 | 3, 4, 5 | sylancl 411 | . 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → DECID (𝐴 /L 𝑃) = 0) |
7 | simpl 108 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → 𝐴 ∈ ℤ) | |
8 | prmnn 12064 | . . . . . 6 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ) | |
9 | 8 | adantl 275 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℕ) |
10 | 7, 9 | zmodcld 10301 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → (𝐴 mod 𝑃) ∈ ℕ0) |
11 | 10 | nn0zd 9332 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → (𝐴 mod 𝑃) ∈ ℤ) |
12 | zdceq 9287 | . . 3 ⊢ (((𝐴 mod 𝑃) ∈ ℤ ∧ 0 ∈ ℤ) → DECID (𝐴 mod 𝑃) = 0) | |
13 | 11, 4, 12 | sylancl 411 | . 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → DECID (𝐴 mod 𝑃) = 0) |
14 | lgsne0 13733 | . . . . . 6 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℤ) → ((𝐴 /L 𝑃) ≠ 0 ↔ (𝐴 gcd 𝑃) = 1)) | |
15 | 1, 14 | sylan2 284 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → ((𝐴 /L 𝑃) ≠ 0 ↔ (𝐴 gcd 𝑃) = 1)) |
16 | coprm 12098 | . . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ) → (¬ 𝑃 ∥ 𝐴 ↔ (𝑃 gcd 𝐴) = 1)) | |
17 | 16 | ancoms 266 | . . . . . 6 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → (¬ 𝑃 ∥ 𝐴 ↔ (𝑃 gcd 𝐴) = 1)) |
18 | 1 | anim1i 338 | . . . . . . . . 9 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ) → (𝑃 ∈ ℤ ∧ 𝐴 ∈ ℤ)) |
19 | 18 | ancoms 266 | . . . . . . . 8 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → (𝑃 ∈ ℤ ∧ 𝐴 ∈ ℤ)) |
20 | gcdcom 11928 | . . . . . . . 8 ⊢ ((𝑃 ∈ ℤ ∧ 𝐴 ∈ ℤ) → (𝑃 gcd 𝐴) = (𝐴 gcd 𝑃)) | |
21 | 19, 20 | syl 14 | . . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → (𝑃 gcd 𝐴) = (𝐴 gcd 𝑃)) |
22 | 21 | eqeq1d 2179 | . . . . . 6 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → ((𝑃 gcd 𝐴) = 1 ↔ (𝐴 gcd 𝑃) = 1)) |
23 | 17, 22 | bitr2d 188 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → ((𝐴 gcd 𝑃) = 1 ↔ ¬ 𝑃 ∥ 𝐴)) |
24 | dvdsval3 11753 | . . . . . . . 8 ⊢ ((𝑃 ∈ ℕ ∧ 𝐴 ∈ ℤ) → (𝑃 ∥ 𝐴 ↔ (𝐴 mod 𝑃) = 0)) | |
25 | 8, 24 | sylan 281 | . . . . . . 7 ⊢ ((𝑃 ∈ ℙ ∧ 𝐴 ∈ ℤ) → (𝑃 ∥ 𝐴 ↔ (𝐴 mod 𝑃) = 0)) |
26 | 25 | ancoms 266 | . . . . . 6 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → (𝑃 ∥ 𝐴 ↔ (𝐴 mod 𝑃) = 0)) |
27 | 26 | notbid 662 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → (¬ 𝑃 ∥ 𝐴 ↔ ¬ (𝐴 mod 𝑃) = 0)) |
28 | 15, 23, 27 | 3bitrd 213 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → ((𝐴 /L 𝑃) ≠ 0 ↔ ¬ (𝐴 mod 𝑃) = 0)) |
29 | 28 | 2a1d 23 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → (DECID (𝐴 /L 𝑃) = 0 → (DECID (𝐴 mod 𝑃) = 0 → ((𝐴 /L 𝑃) ≠ 0 ↔ ¬ (𝐴 mod 𝑃) = 0)))) |
30 | 29 | necon4abiddc 2413 | . 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → (DECID (𝐴 /L 𝑃) = 0 → (DECID (𝐴 mod 𝑃) = 0 → ((𝐴 /L 𝑃) = 0 ↔ (𝐴 mod 𝑃) = 0)))) |
31 | 6, 13, 30 | mp2d 47 | 1 ⊢ ((𝐴 ∈ ℤ ∧ 𝑃 ∈ ℙ) → ((𝐴 /L 𝑃) = 0 ↔ (𝐴 mod 𝑃) = 0)) |
Colors of variables: wff set class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 103 ↔ wb 104 DECID wdc 829 = wceq 1348 ∈ wcel 2141 ≠ wne 2340 class class class wbr 3989 (class class class)co 5853 0cc0 7774 1c1 7775 ℕcn 8878 ℤcz 9212 mod cmo 10278 ∥ cdvds 11749 gcd cgcd 11897 ℙcprime 12061 /L clgs 13692 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-coll 4104 ax-sep 4107 ax-nul 4115 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-setind 4521 ax-iinf 4572 ax-cnex 7865 ax-resscn 7866 ax-1cn 7867 ax-1re 7868 ax-icn 7869 ax-addcl 7870 ax-addrcl 7871 ax-mulcl 7872 ax-mulrcl 7873 ax-addcom 7874 ax-mulcom 7875 ax-addass 7876 ax-mulass 7877 ax-distr 7878 ax-i2m1 7879 ax-0lt1 7880 ax-1rid 7881 ax-0id 7882 ax-rnegex 7883 ax-precex 7884 ax-cnre 7885 ax-pre-ltirr 7886 ax-pre-ltwlin 7887 ax-pre-lttrn 7888 ax-pre-apti 7889 ax-pre-ltadd 7890 ax-pre-mulgt0 7891 ax-pre-mulext 7892 ax-arch 7893 ax-caucvg 7894 |
This theorem depends on definitions: df-bi 116 df-stab 826 df-dc 830 df-3or 974 df-3an 975 df-tru 1351 df-fal 1354 df-xor 1371 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-nel 2436 df-ral 2453 df-rex 2454 df-reu 2455 df-rmo 2456 df-rab 2457 df-v 2732 df-sbc 2956 df-csb 3050 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-nul 3415 df-if 3527 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-int 3832 df-iun 3875 df-br 3990 df-opab 4051 df-mpt 4052 df-tr 4088 df-id 4278 df-po 4281 df-iso 4282 df-iord 4351 df-on 4353 df-ilim 4354 df-suc 4356 df-iom 4575 df-xp 4617 df-rel 4618 df-cnv 4619 df-co 4620 df-dm 4621 df-rn 4622 df-res 4623 df-ima 4624 df-iota 5160 df-fun 5200 df-fn 5201 df-f 5202 df-f1 5203 df-fo 5204 df-f1o 5205 df-fv 5206 df-isom 5207 df-riota 5809 df-ov 5856 df-oprab 5857 df-mpo 5858 df-1st 6119 df-2nd 6120 df-recs 6284 df-irdg 6349 df-frec 6370 df-1o 6395 df-2o 6396 df-oadd 6399 df-er 6513 df-en 6719 df-dom 6720 df-fin 6721 df-sup 6961 df-inf 6962 df-pnf 7956 df-mnf 7957 df-xr 7958 df-ltxr 7959 df-le 7960 df-sub 8092 df-neg 8093 df-reap 8494 df-ap 8501 df-div 8590 df-inn 8879 df-2 8937 df-3 8938 df-4 8939 df-5 8940 df-6 8941 df-7 8942 df-8 8943 df-n0 9136 df-z 9213 df-uz 9488 df-q 9579 df-rp 9611 df-fz 9966 df-fzo 10099 df-fl 10226 df-mod 10279 df-seqfrec 10402 df-exp 10476 df-ihash 10710 df-cj 10806 df-re 10807 df-im 10808 df-rsqrt 10962 df-abs 10963 df-clim 11242 df-proddc 11514 df-dvds 11750 df-gcd 11898 df-prm 12062 df-phi 12165 df-pc 12239 df-lgs 13693 |
This theorem is referenced by: (None) |
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