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Mirrors > Home > MPE Home > Th. List > nqex | Structured version Visualization version GIF version |
Description: The class of positive fractions exists. (Contributed by NM, 16-Aug-1995.) (Revised by Mario Carneiro, 27-Apr-2013.) (New usage is discouraged.) |
Ref | Expression |
---|---|
nqex | ⊢ Q ∈ V |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-nq 10328 | . 2 ⊢ Q = {𝑦 ∈ (N × N) ∣ ∀𝑥 ∈ (N × N)(𝑦 ~Q 𝑥 → ¬ (2nd ‘𝑥) <N (2nd ‘𝑦))} | |
2 | niex 10297 | . . 3 ⊢ N ∈ V | |
3 | 2, 2 | xpex 7470 | . 2 ⊢ (N × N) ∈ V |
4 | 1, 3 | rabex2 5229 | 1 ⊢ Q ∈ V |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 → wi 4 ∈ wcel 2110 ∀wral 3138 Vcvv 3494 class class class wbr 5058 × cxp 5547 ‘cfv 6349 2nd c2nd 7682 Ncnpi 10260 <N clti 10263 ~Q ceq 10267 Qcnq 10268 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1792 ax-4 1806 ax-5 1907 ax-6 1966 ax-7 2011 ax-8 2112 ax-9 2120 ax-10 2141 ax-11 2157 ax-12 2173 ax-ext 2793 ax-sep 5195 ax-nul 5202 ax-pow 5258 ax-pr 5321 ax-un 7455 ax-inf2 9098 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1536 df-ex 1777 df-nf 1781 df-sb 2066 df-mo 2618 df-eu 2650 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3772 df-dif 3938 df-un 3940 df-in 3942 df-ss 3951 df-pss 3953 df-nul 4291 df-if 4467 df-pw 4540 df-sn 4561 df-pr 4563 df-tp 4565 df-op 4567 df-uni 4832 df-br 5059 df-opab 5121 df-tr 5165 df-eprel 5459 df-po 5468 df-so 5469 df-fr 5508 df-we 5510 df-xp 5555 df-rel 5556 df-ord 6188 df-on 6189 df-lim 6190 df-suc 6191 df-om 7575 df-ni 10288 df-nq 10328 |
This theorem is referenced by: npex 10402 elnp 10403 genpv 10415 genpdm 10418 |
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