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| Mirrors > Home > ILE Home > Th. List > zmodcl | GIF version | ||
| Description: Closure law for the modulo operation restricted to integers. (Contributed by NM, 27-Nov-2008.) |
| Ref | Expression |
|---|---|
| zmodcl | ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (𝐴 mod 𝐵) ∈ ℕ0) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | zq 9838 | . . . . 5 ⊢ (𝐴 ∈ ℤ → 𝐴 ∈ ℚ) | |
| 2 | 1 | adantr 276 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → 𝐴 ∈ ℚ) |
| 3 | nnq 9845 | . . . . 5 ⊢ (𝐵 ∈ ℕ → 𝐵 ∈ ℚ) | |
| 4 | 3 | adantl 277 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → 𝐵 ∈ ℚ) |
| 5 | nngt0 9151 | . . . . 5 ⊢ (𝐵 ∈ ℕ → 0 < 𝐵) | |
| 6 | 5 | adantl 277 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → 0 < 𝐵) |
| 7 | modqval 10563 | . . . 4 ⊢ ((𝐴 ∈ ℚ ∧ 𝐵 ∈ ℚ ∧ 0 < 𝐵) → (𝐴 mod 𝐵) = (𝐴 − (𝐵 · (⌊‘(𝐴 / 𝐵))))) | |
| 8 | 2, 4, 6, 7 | syl3anc 1271 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (𝐴 mod 𝐵) = (𝐴 − (𝐵 · (⌊‘(𝐴 / 𝐵))))) |
| 9 | nnz 9481 | . . . . . 6 ⊢ (𝐵 ∈ ℕ → 𝐵 ∈ ℤ) | |
| 10 | 9 | adantl 277 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → 𝐵 ∈ ℤ) |
| 11 | znq 9836 | . . . . . 6 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (𝐴 / 𝐵) ∈ ℚ) | |
| 12 | 11 | flqcld 10514 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (⌊‘(𝐴 / 𝐵)) ∈ ℤ) |
| 13 | 10, 12 | zmulcld 9591 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (𝐵 · (⌊‘(𝐴 / 𝐵))) ∈ ℤ) |
| 14 | zsubcl 9503 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ (𝐵 · (⌊‘(𝐴 / 𝐵))) ∈ ℤ) → (𝐴 − (𝐵 · (⌊‘(𝐴 / 𝐵)))) ∈ ℤ) | |
| 15 | 13, 14 | syldan 282 | . . 3 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (𝐴 − (𝐵 · (⌊‘(𝐴 / 𝐵)))) ∈ ℤ) |
| 16 | 8, 15 | eqeltrd 2306 | . 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (𝐴 mod 𝐵) ∈ ℤ) |
| 17 | modqge0 10571 | . . 3 ⊢ ((𝐴 ∈ ℚ ∧ 𝐵 ∈ ℚ ∧ 0 < 𝐵) → 0 ≤ (𝐴 mod 𝐵)) | |
| 18 | 2, 4, 6, 17 | syl3anc 1271 | . 2 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → 0 ≤ (𝐴 mod 𝐵)) |
| 19 | elnn0z 9475 | . 2 ⊢ ((𝐴 mod 𝐵) ∈ ℕ0 ↔ ((𝐴 mod 𝐵) ∈ ℤ ∧ 0 ≤ (𝐴 mod 𝐵))) | |
| 20 | 16, 18, 19 | sylanbrc 417 | 1 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (𝐴 mod 𝐵) ∈ ℕ0) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1395 ∈ wcel 2200 class class class wbr 4083 ‘cfv 5321 (class class class)co 6010 0cc0 8015 · cmul 8020 < clt 8197 ≤ cle 8198 − cmin 8333 / cdiv 8835 ℕcn 9126 ℕ0cn0 9385 ℤcz 9462 ℚcq 9831 ⌊cfl 10505 mod cmo 10561 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-pow 4259 ax-pr 4294 ax-un 4525 ax-setind 4630 ax-cnex 8106 ax-resscn 8107 ax-1cn 8108 ax-1re 8109 ax-icn 8110 ax-addcl 8111 ax-addrcl 8112 ax-mulcl 8113 ax-mulrcl 8114 ax-addcom 8115 ax-mulcom 8116 ax-addass 8117 ax-mulass 8118 ax-distr 8119 ax-i2m1 8120 ax-0lt1 8121 ax-1rid 8122 ax-0id 8123 ax-rnegex 8124 ax-precex 8125 ax-cnre 8126 ax-pre-ltirr 8127 ax-pre-ltwlin 8128 ax-pre-lttrn 8129 ax-pre-apti 8130 ax-pre-ltadd 8131 ax-pre-mulgt0 8132 ax-pre-mulext 8133 ax-arch 8134 |
| This theorem depends on definitions: df-bi 117 df-3or 1003 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-reu 2515 df-rmo 2516 df-rab 2517 df-v 2801 df-sbc 3029 df-csb 3125 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-int 3924 df-iun 3967 df-br 4084 df-opab 4146 df-mpt 4147 df-id 4385 df-po 4388 df-iso 4389 df-xp 4726 df-rel 4727 df-cnv 4728 df-co 4729 df-dm 4730 df-rn 4731 df-res 4732 df-ima 4733 df-iota 5281 df-fun 5323 df-fn 5324 df-f 5325 df-fv 5329 df-riota 5963 df-ov 6013 df-oprab 6014 df-mpo 6015 df-1st 6295 df-2nd 6296 df-pnf 8199 df-mnf 8200 df-xr 8201 df-ltxr 8202 df-le 8203 df-sub 8335 df-neg 8336 df-reap 8738 df-ap 8745 df-div 8836 df-inn 9127 df-n0 9386 df-z 9463 df-q 9832 df-rp 9867 df-fl 10507 df-mod 10562 |
| This theorem is referenced by: zmodcld 10584 zmodfz 10585 modaddmodup 10626 modaddmodlo 10627 modfsummodlemstep 11989 divalglemnn 12450 divalgmod 12459 modgcd 12533 eucalgf 12598 eucalginv 12599 modprmn0modprm0 12800 fldivp1 12892 lgsmod 15726 lgsdir2lem4 15731 lgsdir2lem5 15732 lgsne0 15738 |
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