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| Mirrors > Home > ILE Home > Th. List > 1lt2 | GIF version | ||
| Description: 1 is less than 2. (Contributed by NM, 24-Feb-2005.) |
| Ref | Expression |
|---|---|
| 1lt2 | ⊢ 1 < 2 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1re 8289 | . . 3 ⊢ 1 ∈ ℝ | |
| 2 | 1 | ltp1i 9199 | . 2 ⊢ 1 < (1 + 1) |
| 3 | df-2 9316 | . 2 ⊢ 2 = (1 + 1) | |
| 4 | 2, 3 | breqtrri 4141 | 1 ⊢ 1 < 2 |
| Colors of variables: wff set class |
| Syntax hints: class class class wbr 4114 (class class class)co 6058 1c1 8144 + caddc 8146 < clt 8324 2c2 9308 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-cnex 8234 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-addcom 8243 ax-addass 8245 ax-i2m1 8248 ax-0lt1 8249 ax-0id 8251 ax-rnegex 8252 ax-pre-ltadd 8259 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-br 4115 df-opab 4177 df-xp 4760 df-iota 5317 df-fv 5365 df-ov 6061 df-pnf 8326 df-mnf 8327 df-ltxr 8329 df-2 9316 |
| This theorem is referenced by: 1lt3 9429 1lt4 9432 1lt6 9441 1lt7 9447 1lt8 9454 1lt9 9462 1ne2 9464 1ap2 9465 1le2 9466 halflt1 9475 nn0ge2m1nn 9580 nn0n0n1ge2b 9678 halfnz 9695 1lt10 9868 fztpval 10442 ige2m2fzo 10568 wrdlenge2n0 11288 s3fv1g 11512 sqrt2gt1lt2 11763 ege2le3 12386 cos12dec 12483 ene1 12500 eap1 12501 n2dvds1 12627 bits0o 12665 bitsfzolem 12669 bitsfzo 12670 bitsfi 12672 2prm 12853 3prm 12854 4nprm 12855 isprm5 12868 dec2dvds 13138 dec5nprm 13141 dec2nprm 13142 2expltfac 13166 ballotfilem2 13176 basendxltplusgndx 13414 grpstrg 13427 grpbaseg 13428 grpplusgg 13429 rngstrg 13436 lmodstrd 13465 topgrpstrd 13497 reeff1o 15768 cosz12 15775 2logb9irrALT 15969 sqrt2cxp2logb9e3 15970 mersenne 15995 perfectlem1 15997 perfectlem2 15998 lgseisenlem1 16073 clwwlkext2edg 16547 eupth2lem3lem4fi 16598 |
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