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Mirrors > Home > MPE Home > Th. List > 1nq | Structured version Visualization version GIF version |
Description: The positive fraction 'one'. (Contributed by NM, 29-Oct-1995.) (Revised by Mario Carneiro, 28-Apr-2013.) (New usage is discouraged.) |
Ref | Expression |
---|---|
1nq | ⊢ 1Q ∈ Q |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-1nq 10907 | . 2 ⊢ 1Q = ⟨1o, 1o⟩ | |
2 | 1pi 10874 | . . 3 ⊢ 1o ∈ N | |
3 | pinq 10918 | . . 3 ⊢ (1o ∈ N → ⟨1o, 1o⟩ ∈ Q) | |
4 | 2, 3 | ax-mp 5 | . 2 ⊢ ⟨1o, 1o⟩ ∈ Q |
5 | 1, 4 | eqeltri 2830 | 1 ⊢ 1Q ∈ Q |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2107 ⟨cop 4633 1oc1o 8454 Ncnpi 10835 Qcnq 10843 1Qc1q 10844 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-sep 5298 ax-nul 5305 ax-pr 5426 ax-un 7720 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-ral 3063 df-rex 3072 df-rab 3434 df-v 3477 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6492 df-fun 6542 df-fv 6548 df-om 7851 df-2nd 7971 df-1o 8461 df-ni 10863 df-lti 10866 df-nq 10903 df-1nq 10907 |
This theorem is referenced by: nqerf 10921 mulidnq 10954 recmulnq 10955 recclnq 10957 1lt2nq 10964 halfnq 10967 1pr 11006 prlem934 11024 reclem3pr 11040 |
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