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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 8101 |
. 2
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2 | 0re 7960 |
. . . 4
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3 | ltleadd 8406 |
. . . 4
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4 | 2, 2, 3 | mpanl12 436 |
. . 3
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5 | 4 | imp 124 |
. 2
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6 | 1, 5 | eqbrtrrid 4041 |
1
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Colors of variables: wff set class |
Syntax hints: ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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 614 ax-in2 615 ax-io 709 ax-5 1447 ax-7 1448 ax-gen 1449 ax-ie1 1493 ax-ie2 1494 ax-8 1504 ax-10 1505 ax-11 1506 ax-i12 1507 ax-bndl 1509 ax-4 1510 ax-17 1526 ax-i9 1530 ax-ial 1534 ax-i5r 1535 ax-13 2150 ax-14 2151 ax-ext 2159 ax-sep 4123 ax-pow 4176 ax-pr 4211 ax-un 4435 ax-setind 4538 ax-cnex 7905 ax-resscn 7906 ax-1cn 7907 ax-1re 7908 ax-icn 7909 ax-addcl 7910 ax-addrcl 7911 ax-mulcl 7912 ax-addcom 7914 ax-addass 7916 ax-i2m1 7919 ax-0id 7922 ax-rnegex 7923 ax-pre-ltwlin 7927 ax-pre-ltadd 7930 |
This theorem depends on definitions: df-bi 117 df-3an 980 df-tru 1356 df-fal 1359 df-nf 1461 df-sb 1763 df-eu 2029 df-mo 2030 df-clab 2164 df-cleq 2170 df-clel 2173 df-nfc 2308 df-ne 2348 df-nel 2443 df-ral 2460 df-rex 2461 df-rab 2464 df-v 2741 df-dif 3133 df-un 3135 df-in 3137 df-ss 3144 df-pw 3579 df-sn 3600 df-pr 3601 df-op 3603 df-uni 3812 df-br 4006 df-opab 4067 df-xp 4634 df-cnv 4636 df-iota 5180 df-fv 5226 df-ov 5881 df-pnf 7997 df-mnf 7998 df-xr 7999 df-ltxr 8000 df-le 8001 |
This theorem is referenced by: addgtge0d 8480 recexaplem2 8612 recp1lt1 8859 resqrexlem1arp 11017 resqrexlemp1rp 11018 resqrexlemglsq 11034 |
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