| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 8332 | . . 3 ⊢ 1 ∈ ℝ | |
| 2 | 1 | ltp1i 9244 | . 2 ⊢ 1 < (1 + 1) |
| 3 | df-2 9373 | . 2 ⊢ 2 = (1 + 1) | |
| 4 | 2, 3 | breqtrri 4158 | 1 ⊢ 1 < 2 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: class class class wbr 4131 (class class class)co 6088 1c1 8187 + caddc 8189 < clt 8367 2c2 9365 |
| 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 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-setind 4686 ax-cnex 8277 ax-resscn 8278 ax-1cn 8279 ax-1re 8280 ax-icn 8281 ax-addcl 8282 ax-addrcl 8283 ax-mulcl 8284 ax-addcom 8286 ax-addass 8288 ax-i2m1 8291 ax-0lt1 8292 ax-0id 8294 ax-rnegex 8295 ax-pre-ltadd 8302 |
| 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 4132 df-opab 4194 df-xp 4782 df-iota 5340 df-fv 5388 df-ov 6091 df-pnf 8369 df-mnf 8370 df-ltxr 8372 df-2 9373 |
| This theorem is used by: 1lt3 9488 1lt4 9491 1lt6 9500 1lt7 9506 1lt8 9513 1lt9 9521 1ne2 9523 1ap2 9524 1le2 9525 halflt1 9534 nn0ge2m1nn 9637 nn0n0n1ge2b 9735 halfnz 9753 1lt10 9931 fztpval 10507 ige2m2fzo 10633 wrdlenge2n0 11362 s3fv1g 11586 sqrt2gt1lt2 11837 ege2le3 12463 cos12dec 12560 ene1 12577 eap1 12578 n2dvds1 12704 bits0o 12742 bitsfzolem 12746 bitsfzo 12747 bitsfi 12749 2prm 12930 3prm 12931 4nprm 12932 isprm5 12946 dec2dvds 13219 dec5nprm 13222 dec2nprm 13223 2expltfac 13248 5prm 13252 6nprm 13253 7prm 13254 8nprm 13255 11prm 13258 13prm 13259 17prm 13260 19prm 13261 37prm 13264 83prm 13266 317prm 13269 631prm 13270 ballotfilem2 13286 basendxltplusgndx 13526 grpstrg 13539 grpbaseg 13540 grpplusgg 13541 rngstrg 13548 lmodstrd 13577 topgrpstrd 13609 reeff1o 16032 cosz12 16040 logdivlt 16157 2logb9irrALT 16243 sqrt2cxp2logb9e3 16244 ppi1 16303 cht1 16304 chtqrpcl 16312 chtqub 16329 mersenne 16330 perfectlem1 16332 perfectlem2 16333 bpos1 16343 bposlem1 16344 bposlem6 16349 bposlem7 16350 bposlem8 16351 lgseisenlem1 16427 clwwlkext2edg 16901 eupth2lem3lem4fi 16952 |
| Copyright terms: Public domain | W3C validator |