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| Mirrors > Home > MPE Home > Th. List > eluz1 | Structured version Visualization version GIF version | ||
| Description: Membership in the upper set of integers starting at 𝑀. (Contributed by NM, 5-Sep-2005.) |
| Ref | Expression |
|---|---|
| eluz1 | ⊢ (𝑀 ∈ ℤ → (𝑁 ∈ (ℤ≥‘𝑀) ↔ (𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁))) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | uzval 12737 | . . 3 ⊢ (𝑀 ∈ ℤ → (ℤ≥‘𝑀) = {𝑘 ∈ ℤ ∣ 𝑀 ≤ 𝑘}) | |
| 2 | 1 | eleq2d 2814 | . 2 ⊢ (𝑀 ∈ ℤ → (𝑁 ∈ (ℤ≥‘𝑀) ↔ 𝑁 ∈ {𝑘 ∈ ℤ ∣ 𝑀 ≤ 𝑘})) |
| 3 | breq2 5096 | . . 3 ⊢ (𝑘 = 𝑁 → (𝑀 ≤ 𝑘 ↔ 𝑀 ≤ 𝑁)) | |
| 4 | 3 | elrab 3648 | . 2 ⊢ (𝑁 ∈ {𝑘 ∈ ℤ ∣ 𝑀 ≤ 𝑘} ↔ (𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁)) |
| 5 | 2, 4 | bitrdi 287 | 1 ⊢ (𝑀 ∈ ℤ → (𝑁 ∈ (ℤ≥‘𝑀) ↔ (𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 ∈ wcel 2109 {crab 3394 class class class wbr 5092 ‘cfv 6482 ≤ cle 11150 ℤcz 12471 ℤ≥cuz 12735 |
| 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 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5235 ax-nul 5245 ax-pr 5371 ax-cnex 11065 ax-resscn 11066 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ral 3045 df-rex 3054 df-rab 3395 df-v 3438 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-nul 4285 df-if 4477 df-pw 4553 df-sn 4578 df-pr 4580 df-op 4584 df-uni 4859 df-br 5093 df-opab 5155 df-mpt 5174 df-id 5514 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-iota 6438 df-fun 6484 df-fv 6490 df-ov 7352 df-neg 11350 df-z 12472 df-uz 12736 |
| This theorem is referenced by: eluz2 12741 eluz1i 12743 eluz 12749 uzid 12750 uzss 12758 eluzp1m1 12761 raluz 12797 rexuz 12799 preduz 13553 fi1uzind 14414 algcvga 16490 uzssico 32728 nndiffz1 32730 fzspl 32733 cycpmco2lem6 33074 cycpmconjslem2 33098 breprexplemc 34606 logblebd 41959 aks6d1c1 42099 aks6d1c2lem4 42110 lzunuz 42751 |
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