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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 12785 | . . 3 ⊢ (𝑀 ∈ ℤ → (ℤ≥‘𝑀) = {𝑘 ∈ ℤ ∣ 𝑀 ≤ 𝑘}) | |
| 2 | 1 | eleq2d 2827 | . 2 ⊢ (𝑀 ∈ ℤ → (𝑁 ∈ (ℤ≥‘𝑀) ↔ 𝑁 ∈ {𝑘 ∈ ℤ ∣ 𝑀 ≤ 𝑘})) |
| 3 | breq2 5079 | . . 3 ⊢ (𝑘 = 𝑁 → (𝑀 ≤ 𝑘 ↔ 𝑀 ≤ 𝑁)) | |
| 4 | 3 | elrab 3631 | . 2 ⊢ (𝑁 ∈ {𝑘 ∈ ℤ ∣ 𝑀 ≤ 𝑘} ↔ (𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁)) |
| 5 | 2, 4 | bitrdi 289 | 1 ⊢ (𝑀 ∈ ℤ → (𝑁 ∈ (ℤ≥‘𝑀) ↔ (𝑁 ∈ ℤ ∧ 𝑀 ≤ 𝑁))) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 397 ∈ wcel 2121 {crab 3393 class class class wbr 5075 ‘cfv 6489 ≤ cle 11175 ℤcz 12519 ℤ≥cuz 12783 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5221 ax-pr 5365 ax-cnex 11089 ax-resscn 11090 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ral 3056 df-rex 3066 df-rab 3394 df-v 3435 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-br 5076 df-opab 5138 df-mpt 5157 df-id 5516 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-iota 6445 df-fun 6491 df-fv 6497 df-ov 7363 df-neg 11375 df-z 12520 df-uz 12784 |
| This theorem is referenced by: eluz2 12789 eluz1i 12791 eluz 12797 uzid 12798 uzss 12806 eluzp1m1 12809 raluz 12841 rexuz 12843 preduz 13599 fi1uzind 14464 algcvga 16543 uzssico 32880 nndiffz1 32882 fzspl 32885 cycpmco2lem6 33216 cycpmconjslem2 33240 breprexplemc 34828 logblebd 42477 aks6d1c1 42616 aks6d1c2lem4 42627 lzunuz 43232 |
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