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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 12563 | . . . 4 ⊢ ℤ ∈ V | |
| 2 | ssrab2 4024 | . . . 4 ⊢ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ⊆ ℤ | |
| 3 | 1, 2 | elpwi2 5281 | . . 3 ⊢ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ∈ 𝒫 ℤ |
| 4 | 3 | rgenw 3070 | . 2 ⊢ ∀𝑗 ∈ ℤ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ∈ 𝒫 ℤ |
| 5 | df-uz 12826 | . . 3 ⊢ ℤ≥ = (𝑗 ∈ ℤ ↦ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘}) | |
| 6 | 5 | fmpt 7076 | . 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 2132 ∀wral 3066 {crab 3404 Vcvv 3444 𝒫 cpw 4545 class class class wbr 5090 ⟶wf 6502 ≤ cle 11203 ℤcz 12554 ℤ≥cuz 12825 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1805 ax-4 1819 ax-5 1920 ax-6 1977 ax-7 2018 ax-8 2134 ax-9 2142 ax-10 2165 ax-11 2181 ax-12 2202 ax-ext 2724 ax-sep 5236 ax-pr 5380 ax-cnex 11115 ax-resscn 11116 |
| This theorem depends on definitions: df-bi 209 df-an 399 df-or 857 df-3or 1096 df-3an 1097 df-tru 1553 df-fal 1563 df-ex 1790 df-nf 1794 df-sb 2081 df-mo 2556 df-eu 2586 df-clab 2731 df-cleq 2744 df-clel 2827 df-nfc 2901 df-ral 3067 df-rex 3077 df-rab 3405 df-v 3446 df-dif 3898 df-un 3900 df-in 3902 df-ss 3912 df-nul 4277 df-if 4471 df-pw 4547 df-sn 4573 df-pr 4575 df-op 4579 df-uni 4856 df-br 5091 df-opab 5153 df-mpt 5172 df-id 5531 df-xp 5642 df-rel 5643 df-cnv 5644 df-co 5645 df-dm 5646 df-rn 5647 df-res 5648 df-ima 5649 df-iota 6462 df-fun 6508 df-fn 6509 df-f 6510 df-fv 6514 df-ov 7384 df-neg 11403 df-z 12555 df-uz 12826 |
| This theorem is referenced by: eluzel2 12830 uzn0 12842 uzssz 12846 ltweuz 13960 uzin2 15344 rexanuz 15345 sumz 15721 sumss 15723 prod1 15946 prodss 15949 lmbr2 23288 lmff 23330 zfbas 23925 uzrest 23926 lmflf 24034 lmmbr2 25290 caucfil 25314 lmcau 25344 heibor1lem 38246 dmuz 45747 |
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