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Mirrors > Home > ILE Home > Th. List > pnfnlt | Unicode version |
Description: No extended real is greater than plus infinity. (Contributed by NM, 15-Oct-2005.) |
Ref | Expression |
---|---|
pnfnlt |
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Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pnfnre 7067 |
. . . . . . 7
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2 | 1 | neli 2299 |
. . . . . 6
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3 | 2 | intnanr 839 |
. . . . 5
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4 | 3 | intnanr 839 |
. . . 4
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5 | pnfnemnf 8697 |
. . . . . 6
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6 | 5 | neii 2208 |
. . . . 5
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7 | 6 | intnanr 839 |
. . . 4
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8 | 4, 7 | pm3.2ni 726 |
. . 3
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9 | 2 | intnanr 839 |
. . . 4
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10 | 6 | intnanr 839 |
. . . 4
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11 | 9, 10 | pm3.2ni 726 |
. . 3
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12 | 8, 11 | pm3.2ni 726 |
. 2
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13 | pnfxr 8692 |
. . 3
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14 | ltxr 8695 |
. . 3
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15 | 13, 14 | mpan 400 |
. 2
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16 | 12, 15 | mtbiri 600 |
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 99 ax-ia2 100 ax-ia3 101 ax-in1 544 ax-in2 545 ax-io 630 ax-5 1336 ax-7 1337 ax-gen 1338 ax-ie1 1382 ax-ie2 1383 ax-8 1395 ax-10 1396 ax-11 1397 ax-i12 1398 ax-bndl 1399 ax-4 1400 ax-13 1404 ax-14 1405 ax-17 1419 ax-i9 1423 ax-ial 1427 ax-i5r 1428 ax-ext 2022 ax-sep 3875 ax-pow 3927 ax-pr 3944 ax-un 4170 ax-cnex 6975 ax-resscn 6976 |
This theorem depends on definitions: df-bi 110 df-3an 887 df-tru 1246 df-fal 1249 df-nf 1350 df-sb 1646 df-eu 1903 df-mo 1904 df-clab 2027 df-cleq 2033 df-clel 2036 df-nfc 2167 df-ne 2206 df-nel 2207 df-ral 2311 df-rex 2312 df-rab 2315 df-v 2559 df-un 2922 df-in 2924 df-ss 2931 df-pw 3361 df-sn 3381 df-pr 3382 df-op 3384 df-uni 3581 df-br 3765 df-opab 3819 df-xp 4351 df-pnf 7062 df-mnf 7063 df-xr 7064 df-ltxr 7065 |
This theorem is referenced by: pnfge 8710 xrltnsym 8714 xrlttr 8716 xrltso 8717 xltnegi 8748 |
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