Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > ILE Home > Th. List > 1pi | Unicode version |
Description: Ordinal 'one' is a positive integer. (Contributed by NM, 29-Oct-1995.) |
Ref | Expression |
---|---|
1pi |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 1onn 6116 | . 2 | |
2 | 1n0 6039 | . 2 | |
3 | elni 6498 | . 2 | |
4 | 1, 2, 3 | mpbir2an 883 | 1 |
Colors of variables: wff set class |
Syntax hints: wcel 1433 wne 2245 c0 3251 com 4331 c1o 6017 cnpi 6462 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 576 ax-in2 577 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-13 1444 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-nul 3904 ax-pow 3948 ax-pr 3964 ax-un 4188 |
This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-nf 1390 df-sb 1686 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ne 2246 df-ral 2353 df-rex 2354 df-v 2603 df-dif 2975 df-un 2977 df-in 2979 df-ss 2986 df-nul 3252 df-pw 3384 df-sn 3404 df-pr 3405 df-uni 3602 df-int 3637 df-suc 4126 df-iom 4332 df-1o 6024 df-ni 6494 |
This theorem is referenced by: mulidpi 6508 1lt2pi 6530 nlt1pig 6531 indpi 6532 1nq 6556 1qec 6578 mulidnq 6579 1lt2nq 6596 archnqq 6607 prarloclemarch 6608 prarloclemarch2 6609 nnnq 6612 ltnnnq 6613 nq0m0r 6646 nq0a0 6647 addpinq1 6654 nq02m 6655 prarloclemlt 6683 prarloclemlo 6684 prarloclemn 6689 prarloclemcalc 6692 nqprm 6732 caucvgprlemm 6858 caucvgprprlemml 6884 caucvgprprlemmu 6885 caucvgsrlemasr 6966 caucvgsr 6978 nntopi 7060 |
Copyright terms: Public domain | W3C validator |