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Mirrors > Home > ILE Home > Th. List > 0nnq | Unicode version |
Description: The empty set is not a positive fraction. (Contributed by NM, 24-Aug-1995.) (Revised by Mario Carneiro, 27-Apr-2013.) |
Ref | Expression |
---|---|
0nnq |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | neirr 2333 | . . 3 | |
2 | enqer 7257 | . . . . 5 | |
3 | erdm 6479 | . . . . 5 | |
4 | 2, 3 | ax-mp 5 | . . . 4 |
5 | elqsn0 6538 | . . . 4 | |
6 | 4, 5 | mpan 421 | . . 3 |
7 | 1, 6 | mto 652 | . 2 |
8 | df-nqqs 7247 | . . 3 | |
9 | 8 | eleq2i 2221 | . 2 |
10 | 7, 9 | mtbir 661 | 1 |
Colors of variables: wff set class |
Syntax hints: wn 3 wceq 1332 wcel 2125 wne 2324 c0 3390 cxp 4577 cdm 4579 wer 6466 cqs 6468 cnpi 7171 ceq 7178 cnq 7179 |
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 1481 ax-10 1482 ax-11 1483 ax-i12 1484 ax-bndl 1486 ax-4 1487 ax-17 1503 ax-i9 1507 ax-ial 1511 ax-i5r 1512 ax-13 2127 ax-14 2128 ax-ext 2136 ax-coll 4075 ax-sep 4078 ax-nul 4086 ax-pow 4130 ax-pr 4164 ax-un 4388 ax-setind 4490 ax-iinf 4541 |
This theorem depends on definitions: df-bi 116 df-dc 821 df-3or 964 df-3an 965 df-tru 1335 df-fal 1338 df-nf 1438 df-sb 1740 df-eu 2006 df-mo 2007 df-clab 2141 df-cleq 2147 df-clel 2150 df-nfc 2285 df-ne 2325 df-ral 2437 df-rex 2438 df-reu 2439 df-rab 2441 df-v 2711 df-sbc 2934 df-csb 3028 df-dif 3100 df-un 3102 df-in 3104 df-ss 3111 df-nul 3391 df-pw 3541 df-sn 3562 df-pr 3563 df-op 3565 df-uni 3769 df-int 3804 df-iun 3847 df-br 3962 df-opab 4022 df-mpt 4023 df-tr 4059 df-id 4248 df-iord 4321 df-on 4323 df-suc 4326 df-iom 4544 df-xp 4585 df-rel 4586 df-cnv 4587 df-co 4588 df-dm 4589 df-rn 4590 df-res 4591 df-ima 4592 df-iota 5128 df-fun 5165 df-fn 5166 df-f 5167 df-f1 5168 df-fo 5169 df-f1o 5170 df-fv 5171 df-ov 5817 df-oprab 5818 df-mpo 5819 df-1st 6078 df-2nd 6079 df-recs 6242 df-irdg 6307 df-oadd 6357 df-omul 6358 df-er 6469 df-ec 6471 df-qs 6475 df-ni 7203 df-mi 7205 df-enq 7246 df-nqqs 7247 |
This theorem is referenced by: (None) |
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