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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 11028 | . 2 ⊢ 1Q = 〈1o, 1o〉 | |
| 2 | 1pi 10995 | . . 3 ⊢ 1o ∈ N | |
| 3 | pinq 11039 | . . 3 ⊢ (1o ∈ N → 〈1o, 1o〉 ∈ Q) | |
| 4 | 2, 3 | ax-mp 5 | . 2 ⊢ 〈1o, 1o〉 ∈ Q |
| 5 | 1, 4 | eqeltri 2860 | 1 ⊢ 1Q ∈ Q |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2147 〈cop 4838 1oc1o 8497 Ncnpi 10956 Qcnq 10964 1Qc1q 10965 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-sep 5252 ax-nul 5263 ax-pr 5395 ax-un 7775 |
| 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 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-mpt 5190 df-tr 5216 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-ord 6383 df-on 6384 df-lim 6385 df-suc 6386 df-iota 6512 df-fun 6560 df-fv 6566 df-om 7902 df-2nd 8026 df-1o 8504 df-ni 10984 df-lti 10987 df-nq 11024 df-1nq 11028 |
| This theorem is used by: nqerf 11042 mulidnq 11075 recmulnq 11076 recclnq 11078 1lt2nq 11085 halfnq 11088 1pr 11127 prlem934 11145 reclem3pr 11161 |
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