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| 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 8289 |
. . 3
| |
| 2 | 0lt1 8416 |
. . 3
| |
| 3 | 1, 1, 2, 2 | addgt0ii 8782 |
. 2
|
| 4 | df-2 9313 |
. 2
| |
| 5 | 3, 4 | breqtrri 4141 |
1
|
| Colors of variables: wff set class |
| Syntax hints: class class
class wbr 4114 (class class class)co 6058
|
| 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 2207 ax-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-cnex 8234 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-addcom 8243 ax-addass 8245 ax-i2m1 8248 ax-0lt1 8249 ax-0id 8251 ax-rnegex 8252 ax-pre-lttrn 8257 ax-pre-ltadd 8259 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-rab 2531 df-v 2817 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-br 4115 df-opab 4177 df-xp 4760 df-iota 5317 df-fv 5365 df-ov 6061 df-pnf 8326 df-mnf 8327 df-ltxr 8329 df-2 9313 |
| This theorem is referenced by: 2ne0 9346 2ap0 9347 3pos 9348 halfgt0 9470 halflt1 9472 halfpos2 9485 halfnneg2 9487 nominpos 9493 avglt1 9494 avglt2 9495 nn0n0n1ge2b 9675 3halfnz 9693 2rp 10009 xleaddadd 10239 2tnp1ge0ge0 10685 mulp1mod1 10751 s3fv0g 11508 amgm2 11828 cos2bnd 12471 sin02gt0 12475 sincos2sgn 12477 sin4lt0 12478 epos 12492 oexpneg 12588 oddge22np1 12592 evennn02n 12593 nn0ehalf 12614 nno 12617 nn0oddm1d2 12620 nnoddm1d2 12621 flodddiv4t2lthalf 12650 sqrt2re 12885 sqrt2irrap 12902 slotsdifdsndx 13522 imasvalstrd 13562 cnfldstr 14832 bl2in 15394 pilem3 15774 pipos 15779 sinhalfpilem 15782 sincosq1lem 15816 sinq12gt0 15821 coseq00topi 15826 coseq0negpitopi 15827 tangtx 15829 sincos4thpi 15831 tan4thpi 15832 sincos6thpi 15833 cosordlem 15840 cos02pilt1 15842 gausslemma2dlem0c 16050 gausslemma2dlem1a 16057 gausslemma2dlem2 16061 gausslemma2dlem3 16062 lgseisenlem1 16069 lgseisenlem2 16070 lgseisenlem3 16071 lgsquadlem1 16076 lgsquadlem2 16077 2lgslem1a1 16085 2lgslem1a2 16086 2lgslem1c 16089 2lgslem3a1 16096 konigsberg 16614 ex-fl 16619 |
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