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Mirrors > Home > ILE Home > Th. List > addgtge0 | Unicode version |
Description: The sum of nonnegative and positive numbers is positive. (Contributed by NM, 28-Dec-2005.) (Proof shortened by Andrew Salmon, 19-Nov-2011.) |
Ref | Expression |
---|---|
addgtge0 |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 00id 7316 |
. 2
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2 | 0re 7181 |
. . . 4
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3 | ltleadd 7617 |
. . . 4
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4 | 2, 2, 3 | mpanl12 427 |
. . 3
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5 | 4 | imp 122 |
. 2
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6 | 1, 5 | syl5eqbrr 3827 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 ax-ia1 104 ax-ia2 105 ax-ia3 106 ax-in1 577 ax-in2 578 ax-io 663 ax-5 1377 ax-7 1378 ax-gen 1379 ax-ie1 1423 ax-ie2 1424 ax-8 1436 ax-10 1437 ax-11 1438 ax-i12 1439 ax-bndl 1440 ax-4 1441 ax-13 1445 ax-14 1446 ax-17 1460 ax-i9 1464 ax-ial 1468 ax-i5r 1469 ax-ext 2064 ax-sep 3904 ax-pow 3956 ax-pr 3972 ax-un 4196 ax-setind 4288 ax-cnex 7129 ax-resscn 7130 ax-1cn 7131 ax-1re 7132 ax-icn 7133 ax-addcl 7134 ax-addrcl 7135 ax-mulcl 7136 ax-addcom 7138 ax-addass 7140 ax-i2m1 7143 ax-0id 7146 ax-rnegex 7147 ax-pre-ltwlin 7151 ax-pre-ltadd 7154 |
This theorem depends on definitions: df-bi 115 df-3an 922 df-tru 1288 df-fal 1291 df-nf 1391 df-sb 1687 df-eu 1945 df-mo 1946 df-clab 2069 df-cleq 2075 df-clel 2078 df-nfc 2209 df-ne 2247 df-nel 2341 df-ral 2354 df-rex 2355 df-rab 2358 df-v 2604 df-dif 2976 df-un 2978 df-in 2980 df-ss 2987 df-pw 3392 df-sn 3412 df-pr 3413 df-op 3415 df-uni 3610 df-br 3794 df-opab 3848 df-xp 4377 df-cnv 4379 df-iota 4897 df-fv 4940 df-ov 5546 df-pnf 7217 df-mnf 7218 df-xr 7219 df-ltxr 7220 df-le 7221 |
This theorem is referenced by: recexaplem2 7809 recp1lt1 8044 resqrexlem1arp 10029 resqrexlemp1rp 10030 resqrexlemglsq 10046 |
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