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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 8221 | . . 3 ⊢ 1 ∈ ℝ | |
| 2 | 1 | ltp1i 9127 | . 2 ⊢ 1 < (1 + 1) |
| 3 | df-2 9244 | . 2 ⊢ 2 = (1 + 1) | |
| 4 | 2, 3 | breqtrri 4120 | 1 ⊢ 1 < 2 |
| Colors of variables: wff set class |
| Syntax hints: class class class wbr 4093 (class class class)co 6028 1c1 8076 + caddc 8078 < clt 8256 2c2 9236 |
| 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 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8166 ax-resscn 8167 ax-1cn 8168 ax-1re 8169 ax-icn 8170 ax-addcl 8171 ax-addrcl 8172 ax-mulcl 8173 ax-addcom 8175 ax-addass 8177 ax-i2m1 8180 ax-0lt1 8181 ax-0id 8183 ax-rnegex 8184 ax-pre-ltadd 8191 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-rab 2520 df-v 2805 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-br 4094 df-opab 4156 df-xp 4737 df-iota 5293 df-fv 5341 df-ov 6031 df-pnf 8258 df-mnf 8259 df-ltxr 8261 df-2 9244 |
| This theorem is referenced by: 1lt3 9357 1lt4 9360 1lt6 9369 1lt7 9375 1lt8 9382 1lt9 9390 1ne2 9392 1ap2 9393 1le2 9394 halflt1 9403 nn0ge2m1nn 9506 nn0n0n1ge2b 9603 halfnz 9620 1lt10 9793 fztpval 10363 ige2m2fzo 10489 wrdlenge2n0 11198 s3fv1g 11422 sqrt2gt1lt2 11672 ege2le3 12295 cos12dec 12392 ene1 12409 eap1 12410 n2dvds1 12536 bits0o 12574 bitsfzolem 12578 bitsfzo 12579 bitsfi 12581 2prm 12762 3prm 12763 4nprm 12764 isprm5 12777 dec2dvds 13047 dec5nprm 13050 dec2nprm 13051 2expltfac 13075 basendxltplusgndx 13259 grpstrg 13272 grpbaseg 13273 grpplusgg 13274 rngstrg 13281 lmodstrd 13310 topgrpstrd 13342 reeff1o 15567 cosz12 15574 2logb9irrALT 15768 sqrt2cxp2logb9e3 15769 mersenne 15794 perfectlem1 15796 perfectlem2 15797 lgseisenlem1 15872 clwwlkext2edg 16346 eupth2lem3lem4fi 16397 |
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