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| Mirrors > Home > MPE Home > Th. List > uzf | Structured version Visualization version GIF version | ||
| Description: The domain and codomain of the upper integers function. (Contributed by Scott Fenton, 8-Aug-2013.) (Revised by Mario Carneiro, 3-Nov-2013.) |
| Ref | Expression |
|---|---|
| uzf | ⊢ ℤ≥:ℤ⟶𝒫 ℤ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | zex 12587 | . . . 4 ⊢ ℤ ∈ V | |
| 2 | ssrab2 4034 | . . . 4 ⊢ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ⊆ ℤ | |
| 3 | 1, 2 | elpwi2 5292 | . . 3 ⊢ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ∈ 𝒫 ℤ |
| 4 | 3 | rgenw 3081 | . 2 ⊢ ∀𝑗 ∈ ℤ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ∈ 𝒫 ℤ |
| 5 | df-uz 12850 | . . 3 ⊢ ℤ≥ = (𝑗 ∈ ℤ ↦ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘}) | |
| 6 | 5 | fmpt 7091 | . 2 ⊢ (∀𝑗 ∈ ℤ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ∈ 𝒫 ℤ ↔ ℤ≥:ℤ⟶𝒫 ℤ) |
| 7 | 4, 6 | mpbi 232 | 1 ⊢ ℤ≥:ℤ⟶𝒫 ℤ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2143 ∀wral 3077 {crab 3415 Vcvv 3455 𝒫 cpw 4556 class class class wbr 5101 ⟶wf 6517 ≤ cle 11228 ℤcz 12578 ℤ≥cuz 12849 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1816 ax-4 1830 ax-5 1931 ax-6 1988 ax-7 2029 ax-8 2145 ax-9 2153 ax-10 2176 ax-11 2192 ax-12 2213 ax-ext 2735 ax-sep 5247 ax-pr 5391 ax-cnex 11140 ax-resscn 11141 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1100 df-3an 1101 df-tru 1564 df-fal 1574 df-ex 1801 df-nf 1805 df-sb 2092 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ral 3078 df-rex 3088 df-rab 3416 df-v 3457 df-dif 3908 df-un 3910 df-in 3912 df-ss 3922 df-nul 4287 df-if 4482 df-pw 4558 df-sn 4584 df-pr 4586 df-op 4590 df-uni 4867 df-br 5102 df-opab 5164 df-mpt 5183 df-id 5543 df-xp 5654 df-rel 5655 df-cnv 5656 df-co 5657 df-dm 5658 df-rn 5659 df-res 5660 df-ima 5661 df-iota 6477 df-fun 6523 df-fn 6524 df-f 6525 df-fv 6529 df-ov 7399 df-neg 11428 df-z 12579 df-uz 12850 |
| This theorem is referenced by: eluzel2 12854 uzn0 12866 uzssz 12870 ltweuz 13984 uzin2 15382 rexanuz 15383 sumz 15759 sumss 15761 prod1 15984 prodss 15987 lmbr2 23326 lmff 23368 zfbas 23963 uzrest 23964 lmflf 24072 lmmbr2 25328 caucfil 25352 lmcau 25382 heibor1lem 38313 dmuz 45800 |
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