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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 8168 |
. . 3
| |
| 2 | 0lt1 8296 |
. . 3
| |
| 3 | 1, 1, 2, 2 | addgt0ii 8661 |
. 2
|
| 4 | df-2 9192 |
. 2
| |
| 5 | 3, 4 | breqtrri 4113 |
1
|
| Colors of variables: wff set class |
| Syntax hints: class class
class wbr 4086 (class class class)co 6013
|
| 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 4205 ax-pow 4262 ax-pr 4297 ax-un 4528 ax-setind 4633 ax-cnex 8113 ax-resscn 8114 ax-1cn 8115 ax-1re 8116 ax-icn 8117 ax-addcl 8118 ax-addrcl 8119 ax-mulcl 8120 ax-addcom 8122 ax-addass 8124 ax-i2m1 8127 ax-0lt1 8128 ax-0id 8130 ax-rnegex 8131 ax-pre-lttrn 8136 ax-pre-ltadd 8138 |
| 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 2802 df-dif 3200 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-br 4087 df-opab 4149 df-xp 4729 df-iota 5284 df-fv 5332 df-ov 6016 df-pnf 8206 df-mnf 8207 df-ltxr 8209 df-2 9192 |
| This theorem is referenced by: 2ne0 9225 2ap0 9226 3pos 9227 halfgt0 9349 halflt1 9351 halfpos2 9364 halfnneg2 9366 nominpos 9372 avglt1 9373 avglt2 9374 nn0n0n1ge2b 9549 3halfnz 9567 2rp 9883 xleaddadd 10112 2tnp1ge0ge0 10551 mulp1mod1 10617 s3fv0g 11362 amgm2 11669 cos2bnd 12311 sin02gt0 12315 sincos2sgn 12317 sin4lt0 12318 epos 12332 oexpneg 12428 oddge22np1 12432 evennn02n 12433 nn0ehalf 12454 nno 12457 nn0oddm1d2 12460 nnoddm1d2 12461 flodddiv4t2lthalf 12490 sqrt2re 12725 sqrt2irrap 12742 slotsdifdsndx 13298 imasvalstrd 13343 cnfldstr 14562 bl2in 15117 pilem3 15497 pipos 15502 sinhalfpilem 15505 sincosq1lem 15539 sinq12gt0 15544 coseq00topi 15549 coseq0negpitopi 15550 tangtx 15552 sincos4thpi 15554 tan4thpi 15555 sincos6thpi 15556 cosordlem 15563 cos02pilt1 15565 gausslemma2dlem0c 15770 gausslemma2dlem1a 15777 gausslemma2dlem2 15781 gausslemma2dlem3 15782 lgseisenlem1 15789 lgseisenlem2 15790 lgseisenlem3 15791 lgsquadlem1 15796 lgsquadlem2 15797 2lgslem1a1 15805 2lgslem1a2 15806 2lgslem1c 15809 2lgslem3a1 15816 ex-fl 16257 |
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