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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 12604 | . . . . . . . 8 ⊢ ℕ ⊆ ℤ | |
| 2 | zcn 12587 | . . . . . . . . . 10 ⊢ (𝑁 ∈ ℤ → 𝑁 ∈ ℂ) | |
| 3 | 2 | abscld 15480 | . . . . . . . . 9 ⊢ (𝑁 ∈ ℤ → (abs‘𝑁) ∈ ℝ) |
| 4 | arch 12492 | . . . . . . . . 9 ⊢ ((abs‘𝑁) ∈ ℝ → ∃𝑥 ∈ ℕ (abs‘𝑁) < 𝑥) | |
| 5 | 3, 4 | syl 18 | . . . . . . . 8 ⊢ (𝑁 ∈ ℤ → ∃𝑥 ∈ ℕ (abs‘𝑁) < 𝑥) |
| 6 | ssrexv 4009 | . . . . . . . 8 ⊢ (ℕ ⊆ ℤ → (∃𝑥 ∈ ℕ (abs‘𝑁) < 𝑥 → ∃𝑥 ∈ ℤ (abs‘𝑁) < 𝑥)) | |
| 7 | 1, 5, 6 | mpsyl 69 | . . . . . . 7 ⊢ (𝑁 ∈ ℤ → ∃𝑥 ∈ ℤ (abs‘𝑁) < 𝑥) |
| 8 | zre 12586 | . . . . . . . . . 10 ⊢ (𝑥 ∈ ℤ → 𝑥 ∈ ℝ) | |
| 9 | ltnle 11277 | . . . . . . . . . 10 ⊢ (((abs‘𝑁) ∈ ℝ ∧ 𝑥 ∈ ℝ) → ((abs‘𝑁) < 𝑥 ↔ ¬ 𝑥 ≤ (abs‘𝑁))) | |
| 10 | 3, 8, 9 | syl2an 607 | . . . . . . . . 9 ⊢ ((𝑁 ∈ ℤ ∧ 𝑥 ∈ ℤ) → ((abs‘𝑁) < 𝑥 ↔ ¬ 𝑥 ≤ (abs‘𝑁))) |
| 11 | 10 | rexbidva 3187 | . . . . . . . 8 ⊢ (𝑁 ∈ ℤ → (∃𝑥 ∈ ℤ (abs‘𝑁) < 𝑥 ↔ ∃𝑥 ∈ ℤ ¬ 𝑥 ≤ (abs‘𝑁))) |
| 12 | rexnal 3117 | . . . . . . . 8 ⊢ (∃𝑥 ∈ ℤ ¬ 𝑥 ≤ (abs‘𝑁) ↔ ¬ ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁)) | |
| 13 | 11, 12 | bitrdi 290 | . . . . . . 7 ⊢ (𝑁 ∈ ℤ → (∃𝑥 ∈ ℤ (abs‘𝑁) < 𝑥 ↔ ¬ ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁))) |
| 14 | 7, 13 | mpbid 235 | . . . . . 6 ⊢ (𝑁 ∈ ℤ → ¬ ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁)) |
| 15 | 14 | adantl 486 | . . . . 5 ⊢ ((∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 ∧ 𝑁 ∈ ℤ) → ¬ ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁)) |
| 16 | ralim 3105 | . . . . . . 7 ⊢ (∀𝑥 ∈ ℤ (𝑥 ∥ 𝑁 → 𝑥 ≤ (abs‘𝑁)) → (∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 → ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁))) | |
| 17 | dvdsleabs 16359 | . . . . . . . . . 10 ⊢ ((𝑥 ∈ ℤ ∧ 𝑁 ∈ ℤ ∧ 𝑁 ≠ 0) → (𝑥 ∥ 𝑁 → 𝑥 ≤ (abs‘𝑁))) | |
| 18 | 17 | 3expb 1136 | . . . . . . . . 9 ⊢ ((𝑥 ∈ ℤ ∧ (𝑁 ∈ ℤ ∧ 𝑁 ≠ 0)) → (𝑥 ∥ 𝑁 → 𝑥 ≤ (abs‘𝑁))) |
| 19 | 18 | expcom 418 | . . . . . . . 8 ⊢ ((𝑁 ∈ ℤ ∧ 𝑁 ≠ 0) → (𝑥 ∈ ℤ → (𝑥 ∥ 𝑁 → 𝑥 ≤ (abs‘𝑁)))) |
| 20 | 19 | ralrimiv 3156 | . . . . . . 7 ⊢ ((𝑁 ∈ ℤ ∧ 𝑁 ≠ 0) → ∀𝑥 ∈ ℤ (𝑥 ∥ 𝑁 → 𝑥 ≤ (abs‘𝑁))) |
| 21 | 16, 20 | syl11 34 | . . . . . 6 ⊢ (∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 → ((𝑁 ∈ ℤ ∧ 𝑁 ≠ 0) → ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁))) |
| 22 | 21 | expdimp 457 | . . . . 5 ⊢ ((∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 ∧ 𝑁 ∈ ℤ) → (𝑁 ≠ 0 → ∀𝑥 ∈ ℤ 𝑥 ≤ (abs‘𝑁))) |
| 23 | 15, 22 | mtod 201 | . . . 4 ⊢ ((∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 ∧ 𝑁 ∈ ℤ) → ¬ 𝑁 ≠ 0) |
| 24 | nne 2964 | . . . 4 ⊢ (¬ 𝑁 ≠ 0 ↔ 𝑁 = 0) | |
| 25 | 23, 24 | sylib 221 | . . 3 ⊢ ((∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 ∧ 𝑁 ∈ ℤ) → 𝑁 = 0) |
| 26 | 25 | expcom 418 | . 2 ⊢ (𝑁 ∈ ℤ → (∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 → 𝑁 = 0)) |
| 27 | dvds0 16319 | . . . 4 ⊢ (𝑥 ∈ ℤ → 𝑥 ∥ 0) | |
| 28 | breq2 5109 | . . . 4 ⊢ (𝑁 = 0 → (𝑥 ∥ 𝑁 ↔ 𝑥 ∥ 0)) | |
| 29 | 27, 28 | imbitrrid 249 | . . 3 ⊢ (𝑁 = 0 → (𝑥 ∈ ℤ → 𝑥 ∥ 𝑁)) |
| 30 | 29 | ralrimiv 3156 | . 2 ⊢ (𝑁 = 0 → ∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁) |
| 31 | 26, 30 | impbid1 228 | 1 ⊢ (𝑁 ∈ ℤ → (∀𝑥 ∈ ℤ 𝑥 ∥ 𝑁 ↔ 𝑁 = 0)) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 400 = wceq 1563 ∈ wcel 2145 ≠ wne 2960 ∀wral 3079 ∃wrex 3089 ⊆ wss 3907 class class class wbr 5105 ‘cfv 6525 ℝcr 11087 0cc0 11088 < clt 11231 ≤ cle 11232 ℕcn 12224 ℤcz 12582 abscabs 15275 ∥ cdvds 16300 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5251 ax-nul 5261 ax-pow 5327 ax-pr 5395 ax-un 7722 ax-cnex 11144 ax-resscn 11145 ax-1cn 11146 ax-icn 11147 ax-addcl 11148 ax-addrcl 11149 ax-mulcl 11150 ax-mulrcl 11151 ax-mulcom 11152 ax-addass 11153 ax-mulass 11154 ax-distr 11155 ax-i2m1 11156 ax-1ne0 11157 ax-1rid 11158 ax-rnegex 11159 ax-rrecex 11160 ax-cnre 11161 ax-pre-lttri 11162 ax-pre-lttrn 11163 ax-pre-ltadd 11164 ax-pre-mulgt0 11165 ax-pre-sup 11166 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-nel 3065 df-ral 3080 df-rex 3090 df-rmo 3370 df-reu 3371 df-rab 3418 df-v 3459 df-sbc 3748 df-csb 3856 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-iun 4954 df-br 5106 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5547 df-eprel 5552 df-po 5560 df-so 5561 df-fr 5605 df-we 5607 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-rn 5663 df-res 5664 df-ima 5665 df-pred 6292 df-ord 6353 df-on 6354 df-lim 6355 df-suc 6356 df-iota 6481 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-fv 6533 df-riota 7357 df-ov 7403 df-oprab 7404 df-mpo 7405 df-om 7851 df-2nd 7975 df-frecs 8266 df-wrecs 8297 df-recs 8346 df-rdg 8385 df-er 8682 df-en 8932 df-dom 8933 df-sdom 8934 df-sup 9390 df-pnf 11233 df-mnf 11234 df-xr 11235 df-ltxr 11236 df-le 11237 df-sub 11431 df-neg 11432 df-div 11860 df-nn 12225 df-2 12294 df-3 12295 df-n0 12496 df-z 12583 df-uz 12854 df-rp 13008 df-seq 14029 df-exp 14089 df-cj 15140 df-re 15141 df-im 15142 df-sqrt 15276 df-abs 15277 df-dvds 16301 |
| This theorem is referenced by: (None) |
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