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| Mirrors > Home > MPE Home > Th. List > 0ltpnf | Structured version Visualization version GIF version | ||
| Description: Zero is less than plus infinity. (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| 0ltpnf | ⊢ 0 < +∞ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0re 11114 | . 2 ⊢ 0 ∈ ℝ | |
| 2 | ltpnf 13019 | . 2 ⊢ (0 ∈ ℝ → 0 < +∞) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ 0 < +∞ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2111 class class class wbr 5089 ℝcr 11005 0cc0 11006 +∞cpnf 11143 < clt 11146 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-ext 2703 ax-sep 5232 ax-nul 5242 ax-pow 5301 ax-pr 5368 ax-un 7668 ax-cnex 11062 ax-1cn 11064 ax-addrcl 11067 ax-rnegex 11077 ax-cnre 11079 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2710 df-cleq 2723 df-clel 2806 df-ral 3048 df-rex 3057 df-rab 3396 df-v 3438 df-dif 3900 df-un 3902 df-ss 3914 df-nul 4281 df-if 4473 df-pw 4549 df-sn 4574 df-pr 4576 df-op 4580 df-uni 4857 df-br 5090 df-opab 5152 df-xp 5620 df-pnf 11148 df-xr 11150 df-ltxr 11151 |
| This theorem is referenced by: xmulgt0 13182 reltxrnmnf 13242 hashneq0 14271 hashge2el2dif 14387 sgnpnf 15000 pnfnei 23135 0bdop 31973 xlt2addrd 32742 xnn0gt0 32752 xrge0mulc1cn 33954 pnfneige0 33964 lmxrge0 33965 mbfposadd 37715 ftc1anclem5 37745 fourierdlem111 46263 fouriersw 46277 |
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