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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 8161 | . . 3 ⊢ 1 ∈ ℝ | |
| 2 | 1 | ltp1i 9068 | . 2 ⊢ 1 < (1 + 1) |
| 3 | df-2 9185 | . 2 ⊢ 2 = (1 + 1) | |
| 4 | 2, 3 | breqtrri 4110 | 1 ⊢ 1 < 2 |
| Colors of variables: wff set class |
| Syntax hints: class class class wbr 4083 (class class class)co 6010 1c1 8016 + caddc 8018 < clt 8197 2c2 9177 |
| 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 617 ax-in2 618 ax-io 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-pow 4259 ax-pr 4294 ax-un 4525 ax-setind 4630 ax-cnex 8106 ax-resscn 8107 ax-1cn 8108 ax-1re 8109 ax-icn 8110 ax-addcl 8111 ax-addrcl 8112 ax-mulcl 8113 ax-addcom 8115 ax-addass 8117 ax-i2m1 8120 ax-0lt1 8121 ax-0id 8123 ax-rnegex 8124 ax-pre-ltadd 8131 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-fal 1401 df-nf 1507 df-sb 1809 df-eu 2080 df-mo 2081 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ne 2401 df-nel 2496 df-ral 2513 df-rex 2514 df-rab 2517 df-v 2801 df-dif 3199 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-br 4084 df-opab 4146 df-xp 4726 df-iota 5281 df-fv 5329 df-ov 6013 df-pnf 8199 df-mnf 8200 df-ltxr 8202 df-2 9185 |
| This theorem is referenced by: 1lt3 9298 1lt4 9301 1lt6 9310 1lt7 9316 1lt8 9323 1lt9 9331 1ne2 9333 1ap2 9334 1le2 9335 halflt1 9344 nn0ge2m1nn 9445 nn0n0n1ge2b 9542 halfnz 9559 1lt10 9732 fztpval 10296 ige2m2fzo 10421 wrdlenge2n0 11125 s3fv1g 11345 sqrt2gt1lt2 11581 ege2le3 12203 cos12dec 12300 ene1 12317 eap1 12318 n2dvds1 12444 bits0o 12482 bitsfzolem 12486 bitsfzo 12487 bitsfi 12489 2prm 12670 3prm 12671 4nprm 12672 isprm5 12685 dec2dvds 12955 dec5nprm 12958 dec2nprm 12959 2expltfac 12983 basendxltplusgndx 13167 grpstrg 13180 grpbaseg 13181 grpplusgg 13182 rngstrg 13189 lmodstrd 13218 topgrpstrd 13250 reeff1o 15468 cosz12 15475 2logb9irrALT 15669 sqrt2cxp2logb9e3 15670 mersenne 15692 perfectlem1 15694 perfectlem2 15695 lgseisenlem1 15770 clwwlkext2edg 16190 |
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