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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 10919 | . 2 ⊢ 1Q = 〈1o, 1o〉 | |
| 2 | 1pi 10886 | . . 3 ⊢ 1o ∈ N | |
| 3 | pinq 10930 | . . 3 ⊢ (1o ∈ N → 〈1o, 1o〉 ∈ Q) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ 〈1o, 1o〉 ∈ Q |
| 5 | 1, 4 | eqeltri 2862 | 1 ⊢ 1Q ∈ Q |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2146 〈cop 4600 1oc1o 8455 Ncnpi 10847 Qcnq 10855 1Qc1q 10856 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2738 ax-sep 5262 ax-nul 5274 ax-pr 5409 ax-un 7745 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2570 df-eu 2600 df-clab 2745 df-cleq 2758 df-clel 2841 df-nfc 2915 df-ne 2962 df-ral 3083 df-rex 3093 df-rab 3420 df-v 3460 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-pss 3928 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-br 5115 df-opab 5179 df-mpt 5198 df-tr 5224 df-id 5561 df-eprel 5566 df-po 5574 df-so 5575 df-fr 5619 df-we 5621 df-xp 5672 df-rel 5673 df-cnv 5674 df-co 5675 df-dm 5676 df-rn 5677 df-ord 6370 df-on 6371 df-lim 6372 df-suc 6373 df-iota 6499 df-fun 6545 df-fv 6551 df-om 7872 df-2nd 7996 df-1o 8462 df-ni 10875 df-lti 10878 df-nq 10915 df-1nq 10919 |
| This theorem is used by: nqerf 10933 mulidnq 10966 recmulnq 10967 recclnq 10969 1lt2nq 10976 halfnq 10979 1pr 11018 prlem934 11036 reclem3pr 11052 |
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