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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 9853 | . . . . 5 ⊢ (𝐴 ∈ ℤ → 𝐴 ∈ ℚ) | |
| 2 | 1 | adantr 276 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → 𝐴 ∈ ℚ) |
| 3 | nnq 9860 | . . . . 5 ⊢ (𝐵 ∈ ℕ → 𝐵 ∈ ℚ) | |
| 4 | 3 | adantl 277 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → 𝐵 ∈ ℚ) |
| 5 | nngt0 9161 | . . . . 5 ⊢ (𝐵 ∈ ℕ → 0 < 𝐵) | |
| 6 | 5 | adantl 277 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → 0 < 𝐵) |
| 7 | modqval 10579 | . . . 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 9491 | . . . . . 6 ⊢ (𝐵 ∈ ℕ → 𝐵 ∈ ℤ) | |
| 10 | 9 | adantl 277 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → 𝐵 ∈ ℤ) |
| 11 | znq 9851 | . . . . . 6 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (𝐴 / 𝐵) ∈ ℚ) | |
| 12 | 11 | flqcld 10530 | . . . . 5 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (⌊‘(𝐴 / 𝐵)) ∈ ℤ) |
| 13 | 10, 12 | zmulcld 9601 | . . . 4 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (𝐵 · (⌊‘(𝐴 / 𝐵))) ∈ ℤ) |
| 14 | zsubcl 9513 | . . . 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 10587 | . . 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 9485 | . 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 4086 ‘cfv 5324 (class class class)co 6013 0cc0 8025 · cmul 8030 < clt 8207 ≤ cle 8208 − cmin 8343 / cdiv 8845 ℕcn 9136 ℕ0cn0 9395 ℤcz 9472 ℚcq 9846 ⌊cfl 10521 mod cmo 10577 |
| 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 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-cnex 8116 ax-resscn 8117 ax-1cn 8118 ax-1re 8119 ax-icn 8120 ax-addcl 8121 ax-addrcl 8122 ax-mulcl 8123 ax-mulrcl 8124 ax-addcom 8125 ax-mulcom 8126 ax-addass 8127 ax-mulass 8128 ax-distr 8129 ax-i2m1 8130 ax-0lt1 8131 ax-1rid 8132 ax-0id 8133 ax-rnegex 8134 ax-precex 8135 ax-cnre 8136 ax-pre-ltirr 8137 ax-pre-ltwlin 8138 ax-pre-lttrn 8139 ax-pre-apti 8140 ax-pre-ltadd 8141 ax-pre-mulgt0 8142 ax-pre-mulext 8143 ax-arch 8144 |
| 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 2802 df-sbc 3030 df-csb 3126 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-int 3927 df-iun 3970 df-br 4087 df-opab 4149 df-mpt 4150 df-id 4388 df-po 4391 df-iso 4392 df-xp 4729 df-rel 4730 df-cnv 4731 df-co 4732 df-dm 4733 df-rn 4734 df-res 4735 df-ima 4736 df-iota 5284 df-fun 5326 df-fn 5327 df-f 5328 df-fv 5332 df-riota 5966 df-ov 6016 df-oprab 6017 df-mpo 6018 df-1st 6298 df-2nd 6299 df-pnf 8209 df-mnf 8210 df-xr 8211 df-ltxr 8212 df-le 8213 df-sub 8345 df-neg 8346 df-reap 8748 df-ap 8755 df-div 8846 df-inn 9137 df-n0 9396 df-z 9473 df-q 9847 df-rp 9882 df-fl 10523 df-mod 10578 |
| This theorem is referenced by: zmodcld 10600 zmodfz 10601 modaddmodup 10642 modaddmodlo 10643 modfsummodlemstep 12011 divalglemnn 12472 divalgmod 12481 modgcd 12555 eucalgf 12620 eucalginv 12621 modprmn0modprm0 12822 fldivp1 12914 lgsmod 15748 lgsdir2lem4 15753 lgsdir2lem5 15754 lgsne0 15760 |
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