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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 8178 | . . 3 ⊢ 1 ∈ ℝ | |
| 2 | 1 | ltp1i 9085 | . 2 ⊢ 1 < (1 + 1) |
| 3 | df-2 9202 | . 2 ⊢ 2 = (1 + 1) | |
| 4 | 2, 3 | breqtrri 4115 | 1 ⊢ 1 < 2 |
| Colors of variables: wff set class |
| Syntax hints: class class class wbr 4088 (class class class)co 6018 1c1 8033 + caddc 8035 < clt 8214 2c2 9194 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-13 2204 ax-14 2205 ax-ext 2213 ax-sep 4207 ax-pow 4264 ax-pr 4299 ax-un 4530 ax-setind 4635 ax-cnex 8123 ax-resscn 8124 ax-1cn 8125 ax-1re 8126 ax-icn 8127 ax-addcl 8128 ax-addrcl 8129 ax-mulcl 8130 ax-addcom 8132 ax-addass 8134 ax-i2m1 8137 ax-0lt1 8138 ax-0id 8140 ax-rnegex 8141 ax-pre-ltadd 8148 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-fal 1403 df-nf 1509 df-sb 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ne 2403 df-nel 2498 df-ral 2515 df-rex 2516 df-rab 2519 df-v 2804 df-dif 3202 df-un 3204 df-in 3206 df-ss 3213 df-pw 3654 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-opab 4151 df-xp 4731 df-iota 5286 df-fv 5334 df-ov 6021 df-pnf 8216 df-mnf 8217 df-ltxr 8219 df-2 9202 |
| This theorem is referenced by: 1lt3 9315 1lt4 9318 1lt6 9327 1lt7 9333 1lt8 9340 1lt9 9348 1ne2 9350 1ap2 9351 1le2 9352 halflt1 9361 nn0ge2m1nn 9462 nn0n0n1ge2b 9559 halfnz 9576 1lt10 9749 fztpval 10318 ige2m2fzo 10444 wrdlenge2n0 11153 s3fv1g 11377 sqrt2gt1lt2 11614 ege2le3 12237 cos12dec 12334 ene1 12351 eap1 12352 n2dvds1 12478 bits0o 12516 bitsfzolem 12520 bitsfzo 12521 bitsfi 12523 2prm 12704 3prm 12705 4nprm 12706 isprm5 12719 dec2dvds 12989 dec5nprm 12992 dec2nprm 12993 2expltfac 13017 basendxltplusgndx 13201 grpstrg 13214 grpbaseg 13215 grpplusgg 13216 rngstrg 13223 lmodstrd 13252 topgrpstrd 13284 reeff1o 15503 cosz12 15510 2logb9irrALT 15704 sqrt2cxp2logb9e3 15705 mersenne 15727 perfectlem1 15729 perfectlem2 15730 lgseisenlem1 15805 clwwlkext2edg 16279 eupth2lem3lem4fi 16330 |
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