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Mirrors > Home > ILE Home > Th. List > 4pos | Unicode version |
Description: The number 4 is positive. (Contributed by NM, 27-May-1999.) |
Ref | Expression |
---|---|
4pos |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 3re 8113 | . . 3 | |
2 | 1re 7118 | . . 3 | |
3 | 3pos 8133 | . . 3 | |
4 | 0lt1 7236 | . . 3 | |
5 | 1, 2, 3, 4 | addgt0ii 7592 | . 2 |
6 | df-4 8100 | . 2 | |
7 | 5, 6 | breqtrri 3810 | 1 |
Colors of variables: wff set class |
Syntax hints: class class class wbr 3785 (class class class)co 5532 cc0 6981 c1 6982 caddc 6984 clt 7153 c3 8090 c4 8091 |
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 576 ax-in2 577 ax-io 662 ax-5 1376 ax-7 1377 ax-gen 1378 ax-ie1 1422 ax-ie2 1423 ax-8 1435 ax-10 1436 ax-11 1437 ax-i12 1438 ax-bndl 1439 ax-4 1440 ax-13 1444 ax-14 1445 ax-17 1459 ax-i9 1463 ax-ial 1467 ax-i5r 1468 ax-ext 2063 ax-sep 3896 ax-pow 3948 ax-pr 3964 ax-un 4188 ax-setind 4280 ax-cnex 7067 ax-resscn 7068 ax-1cn 7069 ax-1re 7070 ax-icn 7071 ax-addcl 7072 ax-addrcl 7073 ax-mulcl 7074 ax-addcom 7076 ax-addass 7078 ax-i2m1 7081 ax-0lt1 7082 ax-0id 7084 ax-rnegex 7085 ax-pre-lttrn 7090 ax-pre-ltadd 7092 |
This theorem depends on definitions: df-bi 115 df-3an 921 df-tru 1287 df-fal 1290 df-nf 1390 df-sb 1686 df-eu 1944 df-mo 1945 df-clab 2068 df-cleq 2074 df-clel 2077 df-nfc 2208 df-ne 2246 df-nel 2340 df-ral 2353 df-rex 2354 df-rab 2357 df-v 2603 df-dif 2975 df-un 2977 df-in 2979 df-ss 2986 df-pw 3384 df-sn 3404 df-pr 3405 df-op 3407 df-uni 3602 df-br 3786 df-opab 3840 df-xp 4369 df-iota 4887 df-fv 4930 df-ov 5535 df-pnf 7155 df-mnf 7156 df-ltxr 7158 df-2 8098 df-3 8099 df-4 8100 |
This theorem is referenced by: 4ne0 8137 4ap0 8138 5pos 8139 8th4div3 8250 div4p1lem1div2 8284 fldiv4p1lem1div2 9307 iexpcyc 9579 faclbnd2 9669 resqrexlemover 9896 resqrexlemcalc1 9900 resqrexlemcalc2 9901 resqrexlemcalc3 9902 resqrexlemnm 9904 resqrexlemga 9909 sqrt2gt1lt2 9935 flodddiv4 10334 |
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