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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 7890 | . . 3 | |
2 | 1 | ltp1i 8792 | . 2 |
3 | df-2 8908 | . 2 | |
4 | 2, 3 | breqtrri 4004 | 1 |
Colors of variables: wff set class |
Syntax hints: class class class wbr 3977 (class class class)co 5837 c1 7746 caddc 7748 clt 7925 c2 8900 |
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 1434 ax-7 1435 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-10 1492 ax-11 1493 ax-i12 1494 ax-bndl 1496 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-i5r 1522 ax-13 2137 ax-14 2138 ax-ext 2146 ax-sep 4095 ax-pow 4148 ax-pr 4182 ax-un 4406 ax-setind 4509 ax-cnex 7836 ax-resscn 7837 ax-1cn 7838 ax-1re 7839 ax-icn 7840 ax-addcl 7841 ax-addrcl 7842 ax-mulcl 7843 ax-addcom 7845 ax-addass 7847 ax-i2m1 7850 ax-0lt1 7851 ax-0id 7853 ax-rnegex 7854 ax-pre-ltadd 7861 |
This theorem depends on definitions: df-bi 116 df-3an 969 df-tru 1345 df-fal 1348 df-nf 1448 df-sb 1750 df-eu 2016 df-mo 2017 df-clab 2151 df-cleq 2157 df-clel 2160 df-nfc 2295 df-ne 2335 df-nel 2430 df-ral 2447 df-rex 2448 df-rab 2451 df-v 2724 df-dif 3114 df-un 3116 df-in 3118 df-ss 3125 df-pw 3556 df-sn 3577 df-pr 3578 df-op 3580 df-uni 3785 df-br 3978 df-opab 4039 df-xp 4605 df-iota 5148 df-fv 5191 df-ov 5840 df-pnf 7927 df-mnf 7928 df-ltxr 7930 df-2 8908 |
This theorem is referenced by: 1lt3 9020 1lt4 9023 1lt6 9032 1lt7 9038 1lt8 9045 1lt9 9053 1ne2 9055 1ap2 9056 1le2 9057 halflt1 9066 nn0ge2m1nn 9166 nn0n0n1ge2b 9262 halfnz 9279 1lt10 9452 fztpval 10009 ige2m2fzo 10124 sqrt2gt1lt2 10981 ege2le3 11602 cos12dec 11698 ene1 11715 eap1 11716 n2dvds1 11838 2prm 12048 3prm 12049 4nprm 12050 isprm5 12063 grpstrg 12464 grpbaseg 12465 grpplusgg 12466 rngstrg 12472 lmodstrd 12490 topgrpstrd 12508 reeff1o 13261 cosz12 13268 2logb9irrALT 13459 sqrt2cxp2logb9e3 13460 |
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