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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 4144 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ (ℤ≥‘𝑁)) | |
2 | eluzle 12697 | . . . . . 6 ⊢ (𝑘 ∈ (ℤ≥‘𝑁) → 𝑁 ≤ 𝑘) | |
3 | 1, 2 | syl 17 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑁 ≤ 𝑘) |
4 | eluzel2 12689 | . . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘𝑁) → 𝑁 ∈ ℤ) | |
5 | 1, 4 | syl 17 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑁 ∈ ℤ) |
6 | eluzelz 12694 | . . . . . . 7 ⊢ (𝑘 ∈ (ℤ≥‘𝑁) → 𝑘 ∈ ℤ) | |
7 | 1, 6 | syl 17 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ ℤ) |
8 | zlem1lt 12474 | . . . . . 6 ⊢ ((𝑁 ∈ ℤ ∧ 𝑘 ∈ ℤ) → (𝑁 ≤ 𝑘 ↔ (𝑁 − 1) < 𝑘)) | |
9 | 5, 7, 8 | syl2anc 584 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → (𝑁 ≤ 𝑘 ↔ (𝑁 − 1) < 𝑘)) |
10 | 3, 9 | mpbid 231 | . . . 4 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → (𝑁 − 1) < 𝑘) |
11 | 7 | zred 12528 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ ℝ) |
12 | peano2zm 12465 | . . . . . . 7 ⊢ (𝑁 ∈ ℤ → (𝑁 − 1) ∈ ℤ) | |
13 | 5, 12 | syl 17 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → (𝑁 − 1) ∈ ℤ) |
14 | 13 | zred 12528 | . . . . 5 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → (𝑁 − 1) ∈ ℝ) |
15 | elinel1 4143 | . . . . . 6 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ (𝑀...(𝑁 − 1))) | |
16 | elfzle2 13362 | . . . . . 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 11228 | . . . 4 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → ¬ (𝑁 − 1) < 𝑘) |
19 | 10, 18 | pm2.21dd 194 | . . 3 ⊢ (𝑘 ∈ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) → 𝑘 ∈ ∅) |
20 | 19 | ssriv 3936 | . 2 ⊢ ((𝑀...(𝑁 − 1)) ∩ (ℤ≥‘𝑁)) ⊆ ∅ |
21 | ss0 4346 | . 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 205 = wceq 1540 ∈ wcel 2105 ∩ cin 3897 ⊆ wss 3898 ∅c0 4270 class class class wbr 5093 ‘cfv 6480 (class class class)co 7338 1c1 10974 < clt 11111 ≤ cle 11112 − cmin 11307 ℤcz 12421 ℤ≥cuz 12684 ...cfz 13341 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2707 ax-sep 5244 ax-nul 5251 ax-pow 5309 ax-pr 5373 ax-un 7651 ax-cnex 11029 ax-resscn 11030 ax-1cn 11031 ax-icn 11032 ax-addcl 11033 ax-addrcl 11034 ax-mulcl 11035 ax-mulrcl 11036 ax-mulcom 11037 ax-addass 11038 ax-mulass 11039 ax-distr 11040 ax-i2m1 11041 ax-1ne0 11042 ax-1rid 11043 ax-rnegex 11044 ax-rrecex 11045 ax-cnre 11046 ax-pre-lttri 11047 ax-pre-lttrn 11048 ax-pre-ltadd 11049 ax-pre-mulgt0 11050 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2886 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-reu 3350 df-rab 3404 df-v 3443 df-sbc 3728 df-csb 3844 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3917 df-nul 4271 df-if 4475 df-pw 4550 df-sn 4575 df-pr 4577 df-op 4581 df-uni 4854 df-iun 4944 df-br 5094 df-opab 5156 df-mpt 5177 df-tr 5211 df-id 5519 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5576 df-we 5578 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6239 df-ord 6306 df-on 6307 df-lim 6308 df-suc 6309 df-iota 6432 df-fun 6482 df-fn 6483 df-f 6484 df-f1 6485 df-fo 6486 df-f1o 6487 df-fv 6488 df-riota 7294 df-ov 7341 df-oprab 7342 df-mpo 7343 df-om 7782 df-1st 7900 df-2nd 7901 df-frecs 8168 df-wrecs 8199 df-recs 8273 df-rdg 8312 df-er 8570 df-en 8806 df-dom 8807 df-sdom 8808 df-pnf 11113 df-mnf 11114 df-xr 11115 df-ltxr 11116 df-le 11117 df-sub 11309 df-neg 11310 df-nn 12076 df-n0 12336 df-z 12422 df-uz 12685 df-fz 13342 |
This theorem is referenced by: 2prm 16495 uniioombllem4 24857 aacllem 46923 |
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