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Mirrors > Home > ILE Home > Th. List > 1nq | GIF version |
Description: The positive fraction 'one'. (Contributed by NM, 29-Oct-1995.) |
Ref | Expression |
---|---|
1nq | ⊢ 1Q ∈ Q |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1pi 7277 | . . . 4 ⊢ 1o ∈ N | |
2 | opelxpi 4643 | . . . 4 ⊢ ((1o ∈ N ∧ 1o ∈ N) → 〈1o, 1o〉 ∈ (N × N)) | |
3 | 1, 1, 2 | mp2an 424 | . . 3 ⊢ 〈1o, 1o〉 ∈ (N × N) |
4 | enqex 7322 | . . . 4 ⊢ ~Q ∈ V | |
5 | 4 | ecelqsi 6567 | . . 3 ⊢ (〈1o, 1o〉 ∈ (N × N) → [〈1o, 1o〉] ~Q ∈ ((N × N) / ~Q )) |
6 | 3, 5 | ax-mp 5 | . 2 ⊢ [〈1o, 1o〉] ~Q ∈ ((N × N) / ~Q ) |
7 | df-1nqqs 7313 | . 2 ⊢ 1Q = [〈1o, 1o〉] ~Q | |
8 | df-nqqs 7310 | . 2 ⊢ Q = ((N × N) / ~Q ) | |
9 | 6, 7, 8 | 3eltr4i 2252 | 1 ⊢ 1Q ∈ Q |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 2141 〈cop 3586 × cxp 4609 1oc1o 6388 [cec 6511 / cqs 6512 Ncnpi 7234 ~Q ceq 7241 Qcnq 7242 1Qc1q 7243 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-sep 4107 ax-nul 4115 ax-pow 4160 ax-pr 4194 ax-un 4418 ax-iinf 4572 |
This theorem depends on definitions: df-bi 116 df-3an 975 df-tru 1351 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-ral 2453 df-rex 2454 df-v 2732 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-nul 3415 df-pw 3568 df-sn 3589 df-pr 3590 df-op 3592 df-uni 3797 df-int 3832 df-br 3990 df-opab 4051 df-suc 4356 df-iom 4575 df-xp 4617 df-cnv 4619 df-dm 4621 df-rn 4622 df-res 4623 df-ima 4624 df-1o 6395 df-ec 6515 df-qs 6519 df-ni 7266 df-enq 7309 df-nqqs 7310 df-1nqqs 7313 |
This theorem is referenced by: recmulnqg 7353 rec1nq 7357 ltaddnq 7369 halfnqq 7372 addnqprllem 7489 addnqprulem 7490 1pr 7516 addnqpr1 7524 appdivnq 7525 1idprl 7552 1idpru 7553 recexprlemm 7586 recexprlem1ssl 7595 recexprlem1ssu 7596 cauappcvgprlemm 7607 caucvgprlemm 7630 caucvgprprlemmu 7657 suplocexprlemmu 7680 |
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