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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 8272 | . . 3 ⊢ 1 ∈ ℝ | |
| 2 | 1 | ltp1i 9178 | . 2 ⊢ 1 < (1 + 1) |
| 3 | df-2 9295 | . 2 ⊢ 2 = (1 + 1) | |
| 4 | 2, 3 | breqtrri 4135 | 1 ⊢ 1 < 2 |
| Colors of variables: wff set class |
| Syntax hints: class class class wbr 4108 (class class class)co 6049 1c1 8127 + caddc 8129 < clt 8307 2c2 9287 |
| 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 2205 ax-14 2206 ax-ext 2214 ax-sep 4227 ax-pow 4286 ax-pr 4321 ax-un 4553 ax-setind 4658 ax-cnex 8217 ax-resscn 8218 ax-1cn 8219 ax-1re 8220 ax-icn 8221 ax-addcl 8222 ax-addrcl 8223 ax-mulcl 8224 ax-addcom 8226 ax-addass 8228 ax-i2m1 8231 ax-0lt1 8232 ax-0id 8234 ax-rnegex 8235 ax-pre-ltadd 8242 |
| 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 2083 df-mo 2084 df-clab 2219 df-cleq 2225 df-clel 2228 df-nfc 2373 df-ne 2413 df-nel 2508 df-ral 2525 df-rex 2526 df-rab 2529 df-v 2814 df-dif 3212 df-un 3214 df-in 3216 df-ss 3223 df-pw 3670 df-sn 3694 df-pr 3695 df-op 3697 df-uni 3914 df-br 4109 df-opab 4171 df-xp 4754 df-iota 5311 df-fv 5359 df-ov 6052 df-pnf 8309 df-mnf 8310 df-ltxr 8312 df-2 9295 |
| This theorem is referenced by: 1lt3 9408 1lt4 9411 1lt6 9420 1lt7 9426 1lt8 9433 1lt9 9441 1ne2 9443 1ap2 9444 1le2 9445 halflt1 9454 nn0ge2m1nn 9559 nn0n0n1ge2b 9656 halfnz 9673 1lt10 9846 fztpval 10416 ige2m2fzo 10542 wrdlenge2n0 11256 s3fv1g 11480 sqrt2gt1lt2 11730 ege2le3 12353 cos12dec 12450 ene1 12467 eap1 12468 n2dvds1 12594 bits0o 12632 bitsfzolem 12636 bitsfzo 12637 bitsfi 12639 2prm 12820 3prm 12821 4nprm 12822 isprm5 12835 dec2dvds 13105 dec5nprm 13108 dec2nprm 13109 2expltfac 13133 basendxltplusgndx 13318 grpstrg 13331 grpbaseg 13332 grpplusgg 13333 rngstrg 13340 lmodstrd 13369 topgrpstrd 13401 reeff1o 15630 cosz12 15637 2logb9irrALT 15831 sqrt2cxp2logb9e3 15832 mersenne 15857 perfectlem1 15859 perfectlem2 15860 lgseisenlem1 15935 clwwlkext2edg 16409 eupth2lem3lem4fi 16460 |
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