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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 7147 | . . . 4 ⊢ 1o ∈ N | |
2 | opelxpi 4579 | . . . 4 ⊢ ((1o ∈ N ∧ 1o ∈ N) → 〈1o, 1o〉 ∈ (N × N)) | |
3 | 1, 1, 2 | mp2an 423 | . . 3 ⊢ 〈1o, 1o〉 ∈ (N × N) |
4 | enqex 7192 | . . . 4 ⊢ ~Q ∈ V | |
5 | 4 | ecelqsi 6491 | . . 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 7183 | . 2 ⊢ 1Q = [〈1o, 1o〉] ~Q | |
8 | df-nqqs 7180 | . 2 ⊢ Q = ((N × N) / ~Q ) | |
9 | 6, 7, 8 | 3eltr4i 2222 | 1 ⊢ 1Q ∈ Q |
Colors of variables: wff set class |
Syntax hints: ∈ wcel 1481 〈cop 3535 × cxp 4545 1oc1o 6314 [cec 6435 / cqs 6436 Ncnpi 7104 ~Q ceq 7111 Qcnq 7112 1Qc1q 7113 |
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 604 ax-in2 605 ax-io 699 ax-5 1424 ax-7 1425 ax-gen 1426 ax-ie1 1470 ax-ie2 1471 ax-8 1483 ax-10 1484 ax-11 1485 ax-i12 1486 ax-bndl 1487 ax-4 1488 ax-13 1492 ax-14 1493 ax-17 1507 ax-i9 1511 ax-ial 1515 ax-i5r 1516 ax-ext 2122 ax-sep 4054 ax-nul 4062 ax-pow 4106 ax-pr 4139 ax-un 4363 ax-iinf 4510 |
This theorem depends on definitions: df-bi 116 df-3an 965 df-tru 1335 df-nf 1438 df-sb 1737 df-eu 2003 df-mo 2004 df-clab 2127 df-cleq 2133 df-clel 2136 df-nfc 2271 df-ne 2310 df-ral 2422 df-rex 2423 df-v 2691 df-dif 3078 df-un 3080 df-in 3082 df-ss 3089 df-nul 3369 df-pw 3517 df-sn 3538 df-pr 3539 df-op 3541 df-uni 3745 df-int 3780 df-br 3938 df-opab 3998 df-suc 4301 df-iom 4513 df-xp 4553 df-cnv 4555 df-dm 4557 df-rn 4558 df-res 4559 df-ima 4560 df-1o 6321 df-ec 6439 df-qs 6443 df-ni 7136 df-enq 7179 df-nqqs 7180 df-1nqqs 7183 |
This theorem is referenced by: recmulnqg 7223 rec1nq 7227 ltaddnq 7239 halfnqq 7242 addnqprllem 7359 addnqprulem 7360 1pr 7386 addnqpr1 7394 appdivnq 7395 1idprl 7422 1idpru 7423 recexprlemm 7456 recexprlem1ssl 7465 recexprlem1ssu 7466 cauappcvgprlemm 7477 caucvgprlemm 7500 caucvgprprlemmu 7527 suplocexprlemmu 7550 |
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