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| Mirrors > Home > ILE Home > Th. List > 3pos | Unicode version | ||
| Description: The number 3 is positive. (Contributed by NM, 27-May-1999.) |
| Ref | Expression |
|---|---|
| 3pos |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2re 9191 |
. . 3
| |
| 2 | 1re 8156 |
. . 3
| |
| 3 | 2pos 9212 |
. . 3
| |
| 4 | 0lt1 8284 |
. . 3
| |
| 5 | 1, 2, 3, 4 | addgt0ii 8649 |
. 2
|
| 6 | df-3 9181 |
. 2
| |
| 7 | 5, 6 | breqtrri 4110 |
1
|
| Colors of variables: wff set class |
| Syntax hints: class class
class wbr 4083 (class class class)co 6007
|
| 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 4258 ax-pr 4293 ax-un 4524 ax-setind 4629 ax-cnex 8101 ax-resscn 8102 ax-1cn 8103 ax-1re 8104 ax-icn 8105 ax-addcl 8106 ax-addrcl 8107 ax-mulcl 8108 ax-addcom 8110 ax-addass 8112 ax-i2m1 8115 ax-0lt1 8116 ax-0id 8118 ax-rnegex 8119 ax-pre-lttrn 8124 ax-pre-ltadd 8126 |
| 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 4725 df-iota 5278 df-fv 5326 df-ov 6010 df-pnf 8194 df-mnf 8195 df-ltxr 8197 df-2 9180 df-3 9181 |
| This theorem is referenced by: 3ne0 9216 3ap0 9217 4pos 9218 8th4div3 9341 halfpm6th 9342 3rp 9867 fz0to4untppr 10332 sqrt9 11575 ef01bndlem 12283 cos2bnd 12287 sin01gt0 12289 cos01gt0 12290 flodddiv4 12463 slotsdifunifndx 13281 coseq0negpitopi 15526 tangtx 15528 sincos6thpi 15532 cos02pilt1 15541 lgsdir2lem1 15723 ex-gcd 16178 |
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