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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 12905 | . . 3 ⊢ (𝑀 ∈ ℤ → (ℤ≥‘𝑀) = {𝑘 ∈ ℤ ∣ 𝑀 ≤ 𝑘}) | |
2 | 1 | eleq2d 2830 | . 2 ⊢ (𝑀 ∈ ℤ → (𝑁 ∈ (ℤ≥‘𝑀) ↔ 𝑁 ∈ {𝑘 ∈ ℤ ∣ 𝑀 ≤ 𝑘})) |
3 | breq2 5170 | . . 3 ⊢ (𝑘 = 𝑁 → (𝑀 ≤ 𝑘 ↔ 𝑀 ≤ 𝑁)) | |
4 | 3 | elrab 3708 | . 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 2108 {crab 3443 class class class wbr 5166 ‘cfv 6573 ≤ cle 11325 ℤcz 12639 ℤ≥cuz 12903 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1793 ax-4 1807 ax-5 1909 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2158 ax-12 2178 ax-ext 2711 ax-sep 5317 ax-nul 5324 ax-pr 5447 ax-cnex 11240 ax-resscn 11241 |
This theorem depends on definitions: df-bi 207 df-an 396 df-or 847 df-3or 1088 df-3an 1089 df-tru 1540 df-fal 1550 df-ex 1778 df-nf 1782 df-sb 2065 df-mo 2543 df-eu 2572 df-clab 2718 df-cleq 2732 df-clel 2819 df-nfc 2895 df-ral 3068 df-rex 3077 df-rab 3444 df-v 3490 df-dif 3979 df-un 3981 df-in 3983 df-ss 3993 df-nul 4353 df-if 4549 df-pw 4624 df-sn 4649 df-pr 4651 df-op 4655 df-uni 4932 df-br 5167 df-opab 5229 df-mpt 5250 df-id 5593 df-xp 5706 df-rel 5707 df-cnv 5708 df-co 5709 df-dm 5710 df-iota 6525 df-fun 6575 df-fv 6581 df-ov 7451 df-neg 11523 df-z 12640 df-uz 12904 |
This theorem is referenced by: eluz2 12909 eluz1i 12911 eluz 12917 uzid 12918 uzss 12926 eluzp1m1 12929 raluz 12961 rexuz 12963 preduz 13707 fi1uzind 14556 algcvga 16626 uzssico 32789 nndiffz1 32791 fzspl 32795 cycpmco2lem6 33124 cycpmconjslem2 33148 breprexplemc 34609 logblebd 41932 aks6d1c1 42073 aks6d1c2lem4 42084 lzunuz 42724 |
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