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Mirrors > Home > ILE Home > Th. List > npex | GIF version |
Description: The class of positive reals is a set. (Contributed by NM, 31-Oct-1995.) |
Ref | Expression |
---|---|
npex | ⊢ P ∈ V |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nqex 6461 | . . . 4 ⊢ Q ∈ V | |
2 | 1 | pwex 3932 | . . 3 ⊢ 𝒫 Q ∈ V |
3 | 2, 2 | xpex 4453 | . 2 ⊢ (𝒫 Q × 𝒫 Q) ∈ V |
4 | npsspw 6569 | . 2 ⊢ P ⊆ (𝒫 Q × 𝒫 Q) | |
5 | 3, 4 | ssexi 3895 | 1 ⊢ P ∈ V |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1393 Vcvv 2557 𝒫 cpw 3359 × cxp 4343 Qcnq 6378 Pcnp 6389 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 99 ax-ia2 100 ax-ia3 101 ax-in1 544 ax-in2 545 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-13 1404 ax-14 1405 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-coll 3872 ax-sep 3875 ax-pow 3927 ax-pr 3944 ax-un 4170 ax-iinf 4311 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-nf 1350 df-sb 1646 df-eu 1903 df-mo 1904 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ral 2311 df-rex 2312 df-reu 2313 df-rab 2315 df-v 2559 df-sbc 2765 df-csb 2853 df-dif 2920 df-un 2922 df-in 2924 df-ss 2931 df-pw 3361 df-sn 3381 df-pr 3382 df-op 3384 df-uni 3581 df-int 3616 df-iun 3659 df-br 3765 df-opab 3819 df-mpt 3820 df-id 4030 df-iom 4314 df-xp 4351 df-rel 4352 df-cnv 4353 df-co 4354 df-dm 4355 df-rn 4356 df-res 4357 df-ima 4358 df-iota 4867 df-fun 4904 df-fn 4905 df-f 4906 df-f1 4907 df-fo 4908 df-f1o 4909 df-fv 4910 df-qs 6112 df-ni 6402 df-nqqs 6446 df-inp 6564 |
This theorem is referenced by: enrex 6822 addvalex 6920 axcnex 6935 |
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