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| Mirrors > Home > MPE Home > Th. List > alzdvds | Structured version Visualization version GIF version | ||
| Description: Only 0 is divisible by all integers. (Contributed by Paul Chapman, 21-Mar-2011.) |
| Ref | Expression |
|---|---|
| alzdvds | ⊢ (𝑁 ∈ ℤ → (∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 ↔ 𝑁 = 0)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | nnssz 12635 | . . . . . . . 8 ⊢ ℕ ⊆ ℤ | |
| 2 | zcn 12618 | . . . . . . . . . 10 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℂ) | |
| 3 | 2 | abscld 15475 | . . . . . . . . 9 ⊢ (𝑁 ∈ ℤ → (abs‘𝑁) ∈ ℝ) |
| 4 | arch 12523 | . . . . . . . . 9 ⊢ ((abs‘𝑁) ∈ ℝ → ∃𝑥 ∈ ℕ (abs‘𝑁) < 𝑥) | |
| 5 | 3, 4 | syl 17 | . . . . . . . 8 ⊢ (𝑁 ∈ ℤ → ∃𝑥 ∈ ℕ (abs‘𝑁) < 𝑥) |
| 6 | ssrexv 4053 | . . . . . . . 8 ⊢ (ℕ ⊆ ℤ → (∃𝑥 ∈ ℕ (abs‘𝑁) < 𝑥 → ∃𝑥 ∈ ℤ (abs‘𝑁) < 𝑥)) | |
| 7 | 1, 5, 6 | mpsyl 68 | . . . . . . 7 ⊢ (𝑁 ∈ ℤ → ∃𝑥 ∈ ℤ (abs‘𝑁) < 𝑥) |
| 8 | zre 12617 | . . . . . . . . . 10 ⊢ (𝑥 ∈ ℤ → 𝑥 ∈ ℝ) | |
| 9 | ltnle 11340 | . . . . . . . . . 10 ⊢ (((abs‘𝑁) ∈ ℝ ∧ 𝑥 ∈ ℝ) → ((abs‘𝑁) < 𝑥 ↔ ¬ 𝑥 ≤ (abs‘𝑁))) | |
| 10 | 3, 8, 9 | syl2an 596 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℤ ∧ 𝑥 ∈ ℤ) → ((abs‘𝑁) < 𝑥 ↔ ¬ 𝑥 ≤ (abs‘𝑁))) |
| 11 | 10 | rexbidva 3177 | . . . . . . . 8 ⊢ (𝑁 ∈ ℤ → (∃𝑥 ∈ ℤ (abs‘𝑁) < 𝑥 ↔ ∃𝑥 ∈ ℤ ¬ 𝑥 ≤ (abs‘𝑁))) |
| 12 | rexnal 3100 | . . . . . . . 8 ⊢ (∃𝑥 ∈ ℤ ¬ 𝑥 ≤ (abs‘𝑁) ↔ ¬ ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁)) | |
| 13 | 11, 12 | bitrdi 287 | . . . . . . 7 ⊢ (𝑁 ∈ ℤ → (∃𝑥 ∈ ℤ (abs‘𝑁) < 𝑥 ↔ ¬ ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁))) |
| 14 | 7, 13 | mpbid 232 | . . . . . 6 ⊢ (𝑁 ∈ ℤ → ¬ ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁)) |
| 15 | 14 | adantl 481 | . . . . 5 ⊢ ((∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 ∧ 𝑁 ∈ ℤ) → ¬ ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁)) |
| 16 | ralim 3086 | . . . . . . 7 ⊢ (∀𝑥 ∈ ℤ (𝑥 ∥ 𝑁 → 𝑥 ≤ (abs‘𝑁)) → (∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 → ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁))) | |
| 17 | dvdsleabs 16348 | . . . . . . . . . 10 ⊢ ((𝑥 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑁 ≠ 0) → (𝑥 ∥ 𝑁 → 𝑥 ≤ (abs‘𝑁))) | |
| 18 | 17 | 3expb 1121 | . . . . . . . . 9 ⊢ ((𝑥 ∈ ℤ ∧ (𝑁 ∈ ℤ ∧ 𝑁 ≠ 0)) → (𝑥 ∥ 𝑁 → 𝑥 ≤ (abs‘𝑁))) |
| 19 | 18 | expcom 413 | . . . . . . . 8 ⊢ ((𝑁 ∈ ℤ ∧ 𝑁 ≠ 0) → (𝑥 ∈ ℤ → (𝑥 ∥ 𝑁 → 𝑥 ≤ (abs‘𝑁)))) |
| 20 | 19 | ralrimiv 3145 | . . . . . . 7 ⊢ ((𝑁 ∈ ℤ ∧ 𝑁 ≠ 0) → ∀𝑥 ∈ ℤ (𝑥 ∥ 𝑁 → 𝑥 ≤ (abs‘𝑁))) |
| 21 | 16, 20 | syl11 33 | . . . . . 6 ⊢ (∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 → ((𝑁 ∈ ℤ ∧ 𝑁 ≠ 0) → ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁))) |
| 22 | 21 | expdimp 452 | . . . . 5 ⊢ ((∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 ∧ 𝑁 ∈ ℤ) → (𝑁 ≠ 0 → ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁))) |
| 23 | 15, 22 | mtod 198 | . . . 4 ⊢ ((∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 ∧ 𝑁 ∈ ℤ) → ¬ 𝑁 ≠ 0) |
| 24 | nne 2944 | . . . 4 ⊢ (¬ 𝑁 ≠ 0 ↔ 𝑁 = 0) | |
| 25 | 23, 24 | sylib 218 | . . 3 ⊢ ((∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 ∧ 𝑁 ∈ ℤ) → 𝑁 = 0) |
| 26 | 25 | expcom 413 | . 2 ⊢ (𝑁 ∈ ℤ → (∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 → 𝑁 = 0)) |
| 27 | dvds0 16309 | . . . 4 ⊢ (𝑥 ∈ ℤ → 𝑥 ∥ 0) | |
| 28 | breq2 5147 | . . . 4 ⊢ (𝑁 = 0 → (𝑥 ∥ 𝑁 ↔ 𝑥 ∥ 0)) | |
| 29 | 27, 28 | imbitrrid 246 | . . 3 ⊢ (𝑁 = 0 → (𝑥 ∈ ℤ → 𝑥 ∥ 𝑁)) |
| 30 | 29 | ralrimiv 3145 | . 2 ⊢ (𝑁 = 0 → ∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁) |
| 31 | 26, 30 | impbid1 225 | 1 ⊢ (𝑁 ∈ ℤ → (∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 ↔ 𝑁 = 0)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2108 ≠ wne 2940 ∀wral 3061 ∃wrex 3070 ⊆ wss 3951 class class class wbr 5143 ‘cfv 6561 ℝcr 11154 0cc0 11155 < clt 11295 ≤ cle 11296 ℕcn 12266 ℤcz 12613 abscabs 15273 ∥ cdvds 16290 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2708 ax-sep 5296 ax-nul 5306 ax-pow 5365 ax-pr 5432 ax-un 7755 ax-cnex 11211 ax-resscn 11212 ax-1cn 11213 ax-icn 11214 ax-addcl 11215 ax-addrcl 11216 ax-mulcl 11217 ax-mulrcl 11218 ax-mulcom 11219 ax-addass 11220 ax-mulass 11221 ax-distr 11222 ax-i2m1 11223 ax-1ne0 11224 ax-1rid 11225 ax-rnegex 11226 ax-rrecex 11227 ax-cnre 11228 ax-pre-lttri 11229 ax-pre-lttrn 11230 ax-pre-ltadd 11231 ax-pre-mulgt0 11232 ax-pre-sup 11233 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2892 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3380 df-reu 3381 df-rab 3437 df-v 3482 df-sbc 3789 df-csb 3900 df-dif 3954 df-un 3956 df-in 3958 df-ss 3968 df-pss 3971 df-nul 4334 df-if 4526 df-pw 4602 df-sn 4627 df-pr 4629 df-op 4633 df-uni 4908 df-iun 4993 df-br 5144 df-opab 5206 df-mpt 5226 df-tr 5260 df-id 5578 df-eprel 5584 df-po 5592 df-so 5593 df-fr 5637 df-we 5639 df-xp 5691 df-rel 5692 df-cnv 5693 df-co 5694 df-dm 5695 df-rn 5696 df-res 5697 df-ima 5698 df-pred 6321 df-ord 6387 df-on 6388 df-lim 6389 df-suc 6390 df-iota 6514 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 df-fo 6567 df-f1o 6568 df-fv 6569 df-riota 7388 df-ov 7434 df-oprab 7435 df-mpo 7436 df-om 7888 df-2nd 8015 df-frecs 8306 df-wrecs 8337 df-recs 8411 df-rdg 8450 df-er 8745 df-en 8986 df-dom 8987 df-sdom 8988 df-sup 9482 df-pnf 11297 df-mnf 11298 df-xr 11299 df-ltxr 11300 df-le 11301 df-sub 11494 df-neg 11495 df-div 11921 df-nn 12267 df-2 12329 df-3 12330 df-n0 12527 df-z 12614 df-uz 12879 df-rp 13035 df-seq 14043 df-exp 14103 df-cj 15138 df-re 15139 df-im 15140 df-sqrt 15274 df-abs 15275 df-dvds 16291 |
| This theorem is referenced by: (None) |
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