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| Mirrors > Home > ILE Home > Th. List > nqnq0 | Unicode version | ||
| Description: A positive fraction is a nonnegative fraction. (Contributed by Jim Kingdon, 18-Nov-2019.) |
| Ref | Expression |
|---|---|
| nqnq0 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-nqqs 7570 |
. . . . 5
| |
| 2 | 1 | eleq2i 2297 |
. . . 4
|
| 3 | vex 2804 |
. . . . 5
| |
| 4 | 3 | elqs 6757 |
. . . 4
|
| 5 | df-rex 2515 |
. . . 4
| |
| 6 | 2, 4, 5 | 3bitri 206 |
. . 3
|
| 7 | elxpi 4740 |
. . . . . . 7
| |
| 8 | nqnq0pi 7660 |
. . . . . . . . . . 11
| |
| 9 | 8 | adantl 277 |
. . . . . . . . . 10
|
| 10 | eceq1 6739 |
. . . . . . . . . . . 12
| |
| 11 | eceq1 6739 |
. . . . . . . . . . . 12
| |
| 12 | 10, 11 | eqeq12d 2245 |
. . . . . . . . . . 11
|
| 13 | 12 | adantr 276 |
. . . . . . . . . 10
|
| 14 | 9, 13 | mpbird 167 |
. . . . . . . . 9
|
| 15 | pinn 7531 |
. . . . . . . . . . . . 13
| |
| 16 | opelxpi 4756 |
. . . . . . . . . . . . 13
| |
| 17 | 15, 16 | sylan 283 |
. . . . . . . . . . . 12
|
| 18 | 17 | adantl 277 |
. . . . . . . . . . 11
|
| 19 | eleq1 2293 |
. . . . . . . . . . . 12
| |
| 20 | 19 | adantr 276 |
. . . . . . . . . . 11
|
| 21 | 18, 20 | mpbird 167 |
. . . . . . . . . 10
|
| 22 | enq0ex 7661 |
. . . . . . . . . . . 12
| |
| 23 | 22 | ecelqsi 6760 |
. . . . . . . . . . 11
|
| 24 | df-nq0 7647 |
. . . . . . . . . . 11
| |
| 25 | 23, 24 | eleqtrrdi 2324 |
. . . . . . . . . 10
|
| 26 | 21, 25 | syl 14 |
. . . . . . . . 9
|
| 27 | 14, 26 | eqeltrrd 2308 |
. . . . . . . 8
|
| 28 | 27 | exlimivv 1944 |
. . . . . . 7
|
| 29 | 7, 28 | syl 14 |
. . . . . 6
|
| 30 | 29 | adantr 276 |
. . . . 5
|
| 31 | eleq1 2293 |
. . . . . 6
| |
| 32 | 31 | adantl 277 |
. . . . 5
|
| 33 | 30, 32 | mpbird 167 |
. . . 4
|
| 34 | 33 | exlimiv 1646 |
. . 3
|
| 35 | 6, 34 | sylbi 121 |
. 2
|
| 36 | 35 | ssriv 3230 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2203 ax-14 2204 ax-ext 2212 ax-coll 4203 ax-sep 4206 ax-nul 4214 ax-pow 4263 ax-pr 4298 ax-un 4529 ax-setind 4634 ax-iinf 4685 |
| This theorem depends on definitions: df-bi 117 df-dc 842 df-3or 1005 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1810 df-eu 2081 df-mo 2082 df-clab 2217 df-cleq 2223 df-clel 2226 df-nfc 2362 df-ne 2402 df-ral 2514 df-rex 2515 df-reu 2516 df-rab 2518 df-v 2803 df-sbc 3031 df-csb 3127 df-dif 3201 df-un 3203 df-in 3205 df-ss 3212 df-nul 3494 df-pw 3653 df-sn 3674 df-pr 3675 df-op 3677 df-uni 3893 df-int 3928 df-iun 3971 df-br 4088 df-opab 4150 df-mpt 4151 df-tr 4187 df-id 4389 df-iord 4462 df-on 4464 df-suc 4467 df-iom 4688 df-xp 4730 df-rel 4731 df-cnv 4732 df-co 4733 df-dm 4734 df-rn 4735 df-res 4736 df-ima 4737 df-iota 5285 df-fun 5327 df-fn 5328 df-f 5329 df-f1 5330 df-fo 5331 df-f1o 5332 df-fv 5333 df-ov 6023 df-oprab 6024 df-mpo 6025 df-1st 6305 df-2nd 6306 df-recs 6473 df-irdg 6538 df-oadd 6588 df-omul 6589 df-er 6704 df-ec 6706 df-qs 6710 df-ni 7526 df-mi 7528 df-enq 7569 df-nqqs 7570 df-enq0 7646 df-nq0 7647 |
| This theorem is referenced by: prarloclem5 7722 prarloclemcalc 7724 |
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