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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 12516 | . . . 4 ⊢ ℤ ∈ V | |
| 2 | ssrab2 4039 | . . . 4 ⊢ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ⊆ ℤ | |
| 3 | 1, 2 | elpwi2 5285 | . . 3 ⊢ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ∈ 𝒫 ℤ |
| 4 | 3 | rgenw 3048 | . 2 ⊢ ∀𝑗 ∈ ℤ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ∈ 𝒫 ℤ |
| 5 | df-uz 12772 | . . 3 ⊢ ℤ≥ = (𝑗 ∈ ℤ ↦ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘}) | |
| 6 | 5 | fmpt 7064 | . 2 ⊢ (∀𝑗 ∈ ℤ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ∈ 𝒫 ℤ ↔ ℤ≥:ℤ⟶𝒫 ℤ) |
| 7 | 4, 6 | mpbi 230 | 1 ⊢ ℤ≥:ℤ⟶𝒫 ℤ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2109 ∀wral 3044 {crab 3402 Vcvv 3444 𝒫 cpw 4559 class class class wbr 5102 ⟶wf 6495 ≤ cle 11187 ℤcz 12507 ℤ≥cuz 12771 |
| 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 5246 ax-nul 5256 ax-pr 5382 ax-cnex 11102 ax-resscn 11103 |
| 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 3403 df-v 3446 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-br 5103 df-opab 5165 df-mpt 5184 df-id 5526 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-fv 6507 df-ov 7372 df-neg 11386 df-z 12508 df-uz 12772 |
| This theorem is referenced by: eluzel2 12776 uzn0 12788 uzssz 12792 ltweuz 13904 uzin2 15288 rexanuz 15289 sumz 15665 sumss 15667 prod1 15887 prodss 15890 lmbr2 23180 lmff 23222 zfbas 23817 uzrest 23818 lmflf 23926 lmmbr2 25193 caucfil 25217 lmcau 25247 heibor1lem 37797 dmuz 45222 |
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