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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 9237 |
. 2
|
| 3 | df-2 9365 |
. 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 9365 |
| This theorem is used by: 1lt3 9480 1lt4 9483 1lt6 9492 1lt7 9498 1lt8 9505 1lt9 9513 1ne2 9515 1ap2 9516 1le2 9517 halflt1 9526 nn0ge2m1nn 9631 nn0n0n1ge2b 9729 halfnz 9746 1lt10 9924 fztpval 10500 ige2m2fzo 10626 wrdlenge2n0 11354 s3fv1g 11578 sqrt2gt1lt2 11829 ege2le3 12454 cos12dec 12551 ene1 12568 eap1 12569 n2dvds1 12695 bits0o 12733 bitsfzolem 12737 bitsfzo 12738 bitsfi 12740 2prm 12921 3prm 12922 4nprm 12923 isprm5 12937 dec2dvds 13210 dec5nprm 13213 dec2nprm 13214 2expltfac 13239 5prm 13243 6nprm 13244 7prm 13245 8nprm 13246 11prm 13249 13prm 13250 17prm 13251 19prm 13252 37prm 13255 83prm 13257 317prm 13260 631prm 13261 ballotfilem2 13277 basendxltplusgndx 13516 grpstrg 13529 grpbaseg 13530 grpplusgg 13531 rngstrg 13538 lmodstrd 13567 topgrpstrd 13599 reeff1o 15923 cosz12 15931 logdivlt 16046 2logb9irrALT 16129 sqrt2cxp2logb9e3 16130 ppi1 16176 mersenne 16195 perfectlem1 16197 perfectlem2 16198 bpos1 16208 bposlem1 16209 lgseisenlem1 16287 clwwlkext2edg 16761 eupth2lem3lem4fi 16812 |
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