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| Mirrors > Home > ILE Home > Th. List > 1lt2 | Unicode version | ||
| Description: 1 is less than 2. (Contributed by NM, 24-Feb-2005.) |
| Ref | Expression |
|---|---|
| 1lt2 |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1re 8325 |
. . 3
| |
| 2 | 1 | ltp1i 9235 |
. 2
|
| 3 | df-2 9363 |
. 2
| |
| 4 | 2, 3 | breqtrri 4157 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
class class class wbr 4130 (class class class)co 6085
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 623 ax-in2 624 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4249 ax-pow 4311 ax-pr 4346 ax-un 4578 ax-setind 4684 ax-cnex 8270 ax-resscn 8271 ax-1cn 8272 ax-1re 8273 ax-icn 8274 ax-addcl 8275 ax-addrcl 8276 ax-mulcl 8277 ax-addcom 8279 ax-addass 8281 ax-i2m1 8284 ax-0lt1 8285 ax-0id 8287 ax-rnegex 8288 ax-pre-ltadd 8295 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-fal 1408 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-rab 2537 df-v 2823 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-opab 4193 df-xp 4780 df-iota 5337 df-fv 5385 df-ov 6088 df-pnf 8362 df-mnf 8363 df-ltxr 8365 df-2 9363 |
| This theorem is used by: 1lt3 9476 1lt4 9479 1lt6 9488 1lt7 9494 1lt8 9501 1lt9 9509 1ne2 9511 1ap2 9512 1le2 9513 halflt1 9522 nn0ge2m1nn 9627 nn0n0n1ge2b 9725 halfnz 9742 1lt10 9915 fztpval 10490 ige2m2fzo 10616 wrdlenge2n0 11340 s3fv1g 11564 sqrt2gt1lt2 11815 ege2le3 12438 cos12dec 12535 ene1 12552 eap1 12553 n2dvds1 12679 bits0o 12717 bitsfzolem 12721 bitsfzo 12722 bitsfi 12724 2prm 12905 3prm 12906 4nprm 12907 isprm5 12920 dec2dvds 13190 dec5nprm 13193 dec2nprm 13194 2expltfac 13218 ballotfilem2 13228 basendxltplusgndx 13467 grpstrg 13480 grpbaseg 13481 grpplusgg 13482 rngstrg 13489 lmodstrd 13518 topgrpstrd 13550 reeff1o 15874 cosz12 15881 2logb9irrALT 16076 sqrt2cxp2logb9e3 16077 mersenne 16111 perfectlem1 16113 perfectlem2 16114 lgseisenlem1 16189 clwwlkext2edg 16663 eupth2lem3lem4fi 16714 |
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