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| Mirrors > Home > ILE Home > Th. List > ge0nemnf | Unicode version | ||
| Description: A nonnegative extended real is greater than negative infinity. (Contributed by Mario Carneiro, 20-Aug-2015.) |
| Ref | Expression |
|---|---|
| ge0nemnf |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ge0gtmnf 10015 |
. 2
| |
| 2 | ngtmnft 10009 |
. . . . 5
| |
| 3 | 2 | adantr 276 |
. . . 4
|
| 4 | 3 | biimpd 144 |
. . 3
|
| 5 | 4 | necon2ad 2457 |
. 2
|
| 6 | 1, 5 | mpd 13 |
1
|
| 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 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 4201 ax-pow 4257 ax-pr 4292 ax-un 4523 ax-setind 4628 ax-cnex 8086 ax-resscn 8087 ax-1re 8089 ax-addrcl 8092 ax-rnegex 8104 ax-pre-ltirr 8107 ax-pre-ltwlin 8108 ax-pre-lttrn 8109 |
| This theorem depends on definitions: df-bi 117 df-3or 1003 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 3888 df-br 4083 df-opab 4145 df-po 4386 df-iso 4387 df-xp 4724 df-cnv 4726 df-pnf 8179 df-mnf 8180 df-xr 8181 df-ltxr 8182 df-le 8183 |
| This theorem is referenced by: xlesubadd 10075 xrbdtri 11782 isxmet2d 15016 xmetrtri 15044 xblpnfps 15066 xblpnf 15067 xblss2ps 15072 xblss2 15073 |
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