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| Mirrors > Home > MPE Home > Th. List > uzdisj | Structured version Visualization version GIF version | ||
| Description: The first 𝑁 elements of an upper integer set are distinct from any later members. (Contributed by Mario Carneiro, 24-Apr-2014.) |
| Ref | Expression |
|---|---|
| uzdisj | ⊢ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) = ∅ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elinel2 4155 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ (ℤ≥‘𝑁)) | |
| 2 | eluzle 12853 | . . . . . 6 ⊢ (𝑘 ∈ (ℤ≥‘𝑁) → 𝑁 ≤ 𝑘) | |
| 3 | 1, 2 | syl 17 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑁 ≤ 𝑘) |
| 4 | eluzel2 12845 | . . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘𝑁) → 𝑁 ∈ ℤ) | |
| 5 | 1, 4 | syl 17 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑁 ∈ ℤ) |
| 6 | eluzelz 12850 | . . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘𝑁) → 𝑘 ∈ ℤ) | |
| 7 | 1, 6 | syl 17 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ ℤ) |
| 8 | zlem1lt 12624 | . . . . . 6 ⊢ ((𝑁 ∈ ℤ ∧ 𝑘 ∈ ℤ) → (𝑁 ≤ 𝑘 ↔ (𝑁 − 1) < 𝑘)) | |
| 9 | 5, 7, 8 | syl2anc 593 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → (𝑁 ≤ 𝑘 ↔ (𝑁 − 1) < 𝑘)) |
| 10 | 3, 9 | mpbid 234 | . . . 4 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → (𝑁 − 1) < 𝑘) |
| 11 | 7 | zred 12678 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ ℝ) |
| 12 | peano2zm 12615 | . . . . . . 7 ⊢ (𝑁 ∈ ℤ → (𝑁 − 1) ∈ ℤ) | |
| 13 | 5, 12 | syl 17 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → (𝑁 − 1) ∈ ℤ) |
| 14 | 13 | zred 12678 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → (𝑁 − 1) ∈ ℝ) |
| 15 | elinel1 4154 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ (𝑀...(𝑁 − 1))) | |
| 16 | elfzle2 13534 | . . . . . 6 ⊢ (𝑘 ∈ (𝑀...(𝑁 − 1)) → 𝑘 ≤ (𝑁 − 1)) | |
| 17 | 15, 16 | syl 17 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ≤ (𝑁 − 1)) |
| 18 | 11, 14, 17 | lensymd 11335 | . . . 4 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → ¬ (𝑁 − 1) < 𝑘) |
| 19 | 10, 18 | pm2.21dd 197 | . . 3 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ ∅) |
| 20 | 19 | ssriv 3941 | . 2 ⊢ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) ⊆ ∅ |
| 21 | ss0 4357 | . 2 ⊢ (((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) ⊆ ∅ → ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) = ∅) | |
| 22 | 20, 21 | ax-mp 5 | 1 ⊢ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) = ∅ |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 208 = wceq 1561 ∈ wcel 2143 ∩ cin 3904 ⊆ wss 3905 ∅c0 4286 class class class wbr 5101 ‘cfv 6522 (class class class)co 7397 1c1 11075 < clt 11217 ≤ cle 11218 − cmin 11415 ℤcz 12569 ℤ≥cuz 12840 ...cfz 13513 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5247 ax-nul 5257 ax-pow 5323 ax-pr 5391 ax-un 7719 ax-cnex 11130 ax-resscn 11131 ax-1cn 11132 ax-icn 11133 ax-addcl 11134 ax-addrcl 11135 ax-mulcl 11136 ax-mulrcl 11137 ax-mulcom 11138 ax-addass 11139 ax-mulass 11140 ax-distr 11141 ax-i2m1 11142 ax-1ne0 11143 ax-1rid 11144 ax-rnegex 11145 ax-rrecex 11146 ax-cnre 11147 ax-pre-lttri 11148 ax-pre-lttrn 11149 ax-pre-ltadd 11150 ax-pre-mulgt0 11151 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-nel 3063 df-ral 3078 df-rex 3088 df-reu 3369 df-rab 3416 df-v 3457 df-sbc 3746 df-csb 3854 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-pss 3925 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-iun 4952 df-br 5102 df-opab 5164 df-mpt 5183 df-tr 5209 df-id 5543 df-eprel 5548 df-po 5556 df-so 5557 df-fr 5601 df-we 5603 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-pred 6289 df-ord 6350 df-on 6351 df-lim 6352 df-suc 6353 df-iota 6478 df-fun 6524 df-fn 6525 df-f 6526 df-f1 6527 df-fo 6528 df-f1o 6529 df-fv 6530 df-riota 7354 df-ov 7400 df-oprab 7401 df-mpo 7402 df-om 7848 df-1st 7971 df-2nd 7972 df-frecs 8263 df-wrecs 8294 df-recs 8343 df-rdg 8382 df-er 8679 df-en 8929 df-dom 8930 df-sdom 8931 df-pnf 11219 df-mnf 11220 df-xr 11221 df-ltxr 11222 df-le 11223 df-sub 11417 df-neg 11418 df-nn 12212 df-n0 12483 df-z 12570 df-uz 12841 df-fz 13514 |
| This theorem is referenced by: 2prm 16727 uniioombllem4 25649 aacllem 50423 |
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