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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 12498 | . . . 4 ⊢ ℤ ∈ V | |
| 2 | ssrab2 4021 | . . . 4 ⊢ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ⊆ ℤ | |
| 3 | 1, 2 | elpwi2 5270 | . . 3 ⊢ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ∈ 𝒫 ℤ |
| 4 | 3 | rgenw 3056 | . 2 ⊢ ∀𝑗 ∈ ℤ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘} ∈ 𝒫 ℤ |
| 5 | df-uz 12753 | . . 3 ⊢ ℤ≥ = (𝑗 ∈ ℤ ↦ {𝑘 ∈ ℤ ∣ 𝑗 ≤ 𝑘}) | |
| 6 | 5 | fmpt 7054 | . 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 2114 ∀wral 3052 {crab 3390 Vcvv 3430 𝒫 cpw 4542 class class class wbr 5086 ⟶wf 6486 ≤ cle 11168 ℤcz 12489 ℤ≥cuz 12752 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5231 ax-pr 5368 ax-cnex 11083 ax-resscn 11084 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ral 3053 df-rex 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4275 df-if 4468 df-pw 4544 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-opab 5149 df-mpt 5168 df-id 5517 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-fv 6498 df-ov 7361 df-neg 11368 df-z 12490 df-uz 12753 |
| This theorem is referenced by: eluzel2 12757 uzn0 12769 uzssz 12773 ltweuz 13885 uzin2 15269 rexanuz 15270 sumz 15646 sumss 15648 prod1 15868 prodss 15871 lmbr2 23202 lmff 23244 zfbas 23839 uzrest 23840 lmflf 23948 lmmbr2 25204 caucfil 25228 lmcau 25258 heibor1lem 38121 dmuz 45666 |
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