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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 11132 | . 2 ⊢ 0 ∈ ℝ | |
| 2 | ltpnf 13032 | . 2 ⊢ (0 ∈ ℝ → 0 < +∞) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ 0 < +∞ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2113 class class class wbr 5096 ℝcr 11023 0cc0 11024 +∞cpnf 11161 < clt 11164 |
| 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 2115 ax-9 2123 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 ax-cnex 11080 ax-1cn 11082 ax-addrcl 11085 ax-rnegex 11095 ax-cnre 11097 |
| 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 2713 df-cleq 2726 df-clel 2809 df-ral 3050 df-rex 3059 df-rab 3398 df-v 3440 df-dif 3902 df-un 3904 df-ss 3916 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4862 df-br 5097 df-opab 5159 df-xp 5628 df-pnf 11166 df-xr 11168 df-ltxr 11169 |
| This theorem is referenced by: xmulgt0 13196 reltxrnmnf 13256 hashneq0 14285 hashge2el2dif 14401 sgnpnf 15014 pnfnei 23162 0bdop 32017 xlt2addrd 32788 xnn0gt0 32798 xrge0mulc1cn 34047 pnfneige0 34057 lmxrge0 34058 mbfposadd 37807 ftc1anclem5 37837 fourierdlem111 46403 fouriersw 46417 |
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