| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > 2pos | Unicode version | ||
| Description: The number 2 is positive. (Contributed by NM, 27-May-1999.) |
| Ref | Expression |
|---|---|
| 2pos |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 1re 8315 |
. . 3
| |
| 2 | 0lt1 8443 |
. . 3
| |
| 3 | 1, 1, 2, 2 | addgt0ii 8809 |
. 2
|
| 4 | df-2 9342 |
. 2
| |
| 5 | 3, 4 | breqtrri 4152 |
1
|
| Colors of variables: wff set class |
| Syntax hints: class class
class wbr 4125 (class class class)co 6075
|
| 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 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 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-setind 4679 ax-cnex 8260 ax-resscn 8261 ax-1cn 8262 ax-1re 8263 ax-icn 8264 ax-addcl 8265 ax-addrcl 8266 ax-mulcl 8267 ax-addcom 8269 ax-addass 8271 ax-i2m1 8274 ax-0lt1 8275 ax-0id 8277 ax-rnegex 8278 ax-pre-lttrn 8283 ax-pre-ltadd 8285 |
| This theorem 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 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-br 4126 df-opab 4188 df-xp 4775 df-iota 5332 df-fv 5380 df-ov 6078 df-pnf 8352 df-mnf 8353 df-ltxr 8355 df-2 9342 |
| This theorem is referenced by: 2ne0 9375 2ap0 9376 3pos 9377 halfgt0 9499 halflt1 9501 halfpos2 9514 halfnneg2 9516 nominpos 9522 avglt1 9523 avglt2 9524 nn0n0n1ge2b 9704 3halfnz 9722 2rp 10038 xleaddadd 10268 2tnp1ge0ge0 10714 mulp1mod1 10780 s3fv0g 11541 amgm2 11862 cos2bnd 12505 sin02gt0 12509 sincos2sgn 12511 sin4lt0 12512 epos 12526 oexpneg 12622 oddge22np1 12626 evennn02n 12627 nn0ehalf 12648 nno 12651 nn0oddm1d2 12654 nnoddm1d2 12655 flodddiv4t2lthalf 12684 sqrt2re 12919 sqrt2irrap 12936 slotsdifdsndx 13556 imasvalstrd 13596 cnfldstr 14867 bl2in 15427 pilem3 15807 pipos 15812 sinhalfpilem 15815 sincosq1lem 15849 sinq12gt0 15854 coseq00topi 15859 coseq0negpitopi 15860 tangtx 15862 sincos4thpi 15864 tan4thpi 15865 sincos6thpi 15866 cosordlem 15873 cos02pilt1 15875 gausslemma2dlem0c 16084 gausslemma2dlem1a 16091 gausslemma2dlem2 16095 gausslemma2dlem3 16096 lgseisenlem1 16103 lgseisenlem2 16104 lgseisenlem3 16105 lgsquadlem1 16110 lgsquadlem2 16111 2lgslem1a1 16119 2lgslem1a2 16120 2lgslem1c 16123 2lgslem3a1 16130 konigsberg 16648 ex-fl 16653 |
| Copyright terms: Public domain | W3C validator |