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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 10869 | . 2 ⊢ 1Q = 〈1o, 1o〉 | |
| 2 | 1pi 10836 | . . 3 ⊢ 1o ∈ N | |
| 3 | pinq 10880 | . . 3 ⊢ (1o ∈ N → 〈1o, 1o〉 ∈ Q) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ 〈1o, 1o〉 ∈ Q |
| 5 | 1, 4 | eqeltri 2824 | 1 ⊢ 1Q ∈ Q |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2109 〈cop 4595 1oc1o 8427 Ncnpi 10797 Qcnq 10805 1Qc1q 10806 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-sep 5251 ax-nul 5261 ax-pr 5387 ax-un 7711 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-ral 3045 df-rex 3054 df-rab 3406 df-v 3449 df-dif 3917 df-un 3919 df-in 3921 df-ss 3931 df-pss 3934 df-nul 4297 df-if 4489 df-pw 4565 df-sn 4590 df-pr 4592 df-op 4596 df-uni 4872 df-br 5108 df-opab 5170 df-mpt 5189 df-tr 5215 df-id 5533 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5591 df-we 5593 df-xp 5644 df-rel 5645 df-cnv 5646 df-co 5647 df-dm 5648 df-rn 5649 df-ord 6335 df-on 6336 df-lim 6337 df-suc 6338 df-iota 6464 df-fun 6513 df-fv 6519 df-om 7843 df-2nd 7969 df-1o 8434 df-ni 10825 df-lti 10828 df-nq 10865 df-1nq 10869 |
| This theorem is referenced by: nqerf 10883 mulidnq 10916 recmulnq 10917 recclnq 10919 1lt2nq 10926 halfnq 10929 1pr 10968 prlem934 10986 reclem3pr 11002 |
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