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Mirrors > Home > ILE Home > Th. List > 2nn | Unicode version |
Description: 2 is a positive integer. (Contributed by NM, 20-Aug-2001.) |
Ref | Expression |
---|---|
2nn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-2 8098 | . 2 | |
2 | 1nn 8050 | . . 3 | |
3 | peano2nn 8051 | . . 3 | |
4 | 2, 3 | ax-mp 7 | . 2 |
5 | 1, 4 | eqeltri 2151 | 1 |
Colors of variables: wff set class |
Syntax hints: wcel 1433 (class class class)co 5532 c1 6982 caddc 6984 cn 8039 c2 8089 |
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-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-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-cnex 7067 ax-resscn 7068 ax-1re 7070 ax-addrcl 7073 |
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-ral 2353 df-rex 2354 df-v 2603 df-un 2977 df-in 2979 df-ss 2986 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-int 3637 df-br 3786 df-iota 4887 df-fv 4930 df-ov 5535 df-inn 8040 df-2 8098 |
This theorem is referenced by: 3nn 8194 2nn0 8305 2z 8379 uz3m2nn 8661 ige2m1fz1 9126 qbtwnre 9265 flhalf 9304 sqeq0 9539 sqeq0d 9604 facavg 9673 bcn2 9691 resqrexlemnm 9904 abs00ap 9948 mod2eq0even 10277 mod2eq1n2dvds 10279 sqgcd 10418 3lcm2e6woprm 10468 prm2orodd 10508 3prm 10510 4nprm 10511 divgcdodd 10522 isevengcd2 10537 3lcm2e6 10539 pw2dvdslemn 10543 pw2dvds 10544 pw2dvdseulemle 10545 oddpwdclemxy 10547 oddpwdclemodd 10550 oddpwdclemdc 10551 oddpwdc 10552 sqpweven 10553 2sqpwodd 10554 ex-fl 10563 ex-ceil 10564 |
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