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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 7118 | . . 3 | |
2 | 1 | ltp1i 7983 | . 2 |
3 | df-2 8098 | . 2 | |
4 | 2, 3 | breqtrri 3810 | 1 |
Colors of variables: wff set class |
Syntax hints: class class class wbr 3785 (class class class)co 5532 c1 6982 caddc 6984 clt 7153 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-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-pow 3948 ax-pr 3964 ax-un 4188 ax-setind 4280 ax-cnex 7067 ax-resscn 7068 ax-1cn 7069 ax-1re 7070 ax-icn 7071 ax-addcl 7072 ax-addrcl 7073 ax-mulcl 7074 ax-addcom 7076 ax-addass 7078 ax-i2m1 7081 ax-0lt1 7082 ax-0id 7084 ax-rnegex 7085 ax-pre-ltadd 7092 |
This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-fal 1290 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ne 2246 df-nel 2340 df-ral 2353 df-rex 2354 df-rab 2357 df-v 2603 df-dif 2975 df-un 2977 df-in 2979 df-ss 2986 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-br 3786 df-opab 3840 df-xp 4369 df-iota 4887 df-fv 4930 df-ov 5535 df-pnf 7155 df-mnf 7156 df-ltxr 7158 df-2 8098 |
This theorem is referenced by: 1lt3 8203 1lt4 8206 1lt6 8215 1lt7 8221 1lt8 8228 1lt9 8236 1ne2 8238 1le2 8239 halflt1 8248 nn0ge2m1nn 8348 nn0n0n1ge2b 8427 halfnz 8443 1lt10 8615 fztpval 9100 ige2m2fzo 9207 sqrt2gt1lt2 9935 n2dvds1 10312 2prm 10509 3prm 10510 4nprm 10511 |
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