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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 4143 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ (ℤ≥‘𝑁)) | |
| 2 | eluzle 12795 | . . . . . 6 ⊢ (𝑘 ∈ (ℤ≥‘𝑁) → 𝑁 ≤ 𝑘) | |
| 3 | 1, 2 | syl 17 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑁 ≤ 𝑘) |
| 4 | eluzel2 12787 | . . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘𝑁) → 𝑁 ∈ ℤ) | |
| 5 | 1, 4 | syl 17 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑁 ∈ ℤ) |
| 6 | eluzelz 12792 | . . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘𝑁) → 𝑘 ∈ ℤ) | |
| 7 | 1, 6 | syl 17 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ ℤ) |
| 8 | zlem1lt 12573 | . . . . . 6 ⊢ ((𝑁 ∈ ℤ ∧ 𝑘 ∈ ℤ) → (𝑁 ≤ 𝑘 ↔ (𝑁 − 1) < 𝑘)) | |
| 9 | 5, 7, 8 | syl2anc 585 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → (𝑁 ≤ 𝑘 ↔ (𝑁 − 1) < 𝑘)) |
| 10 | 3, 9 | mpbid 232 | . . . 4 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → (𝑁 − 1) < 𝑘) |
| 11 | 7 | zred 12627 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ ℝ) |
| 12 | peano2zm 12564 | . . . . . . 7 ⊢ (𝑁 ∈ ℤ → (𝑁 − 1) ∈ ℤ) | |
| 13 | 5, 12 | syl 17 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → (𝑁 − 1) ∈ ℤ) |
| 14 | 13 | zred 12627 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → (𝑁 − 1) ∈ ℝ) |
| 15 | elinel1 4142 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ (𝑀...(𝑁 − 1))) | |
| 16 | elfzle2 13476 | . . . . . 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 11291 | . . . 4 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → ¬ (𝑁 − 1) < 𝑘) |
| 19 | 10, 18 | pm2.21dd 195 | . . 3 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ ∅) |
| 20 | 19 | ssriv 3926 | . 2 ⊢ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) ⊆ ∅ |
| 21 | ss0 4343 | . 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 206 = wceq 1542 ∈ wcel 2114 ∩ cin 3889 ⊆ wss 3890 ∅c0 4274 class class class wbr 5086 ‘cfv 6493 (class class class)co 7361 1c1 11033 < clt 11173 ≤ cle 11174 − cmin 11371 ℤcz 12518 ℤ≥cuz 12782 ...cfz 13455 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5232 ax-nul 5242 ax-pow 5303 ax-pr 5371 ax-un 7683 ax-cnex 11088 ax-resscn 11089 ax-1cn 11090 ax-icn 11091 ax-addcl 11092 ax-addrcl 11093 ax-mulcl 11094 ax-mulrcl 11095 ax-mulcom 11096 ax-addass 11097 ax-mulass 11098 ax-distr 11099 ax-i2m1 11100 ax-1ne0 11101 ax-1rid 11102 ax-rnegex 11103 ax-rrecex 11104 ax-cnre 11105 ax-pre-lttri 11106 ax-pre-lttrn 11107 ax-pre-ltadd 11108 ax-pre-mulgt0 11109 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-reu 3344 df-rab 3391 df-v 3432 df-sbc 3730 df-csb 3839 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-iun 4936 df-br 5087 df-opab 5149 df-mpt 5168 df-tr 5194 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 df-riota 7318 df-ov 7364 df-oprab 7365 df-mpo 7366 df-om 7812 df-1st 7936 df-2nd 7937 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11175 df-mnf 11176 df-xr 11177 df-ltxr 11178 df-le 11179 df-sub 11373 df-neg 11374 df-nn 12169 df-n0 12432 df-z 12519 df-uz 12783 df-fz 13456 |
| This theorem is referenced by: 2prm 16655 uniioombllem4 25566 aacllem 50291 |
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