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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 11137 | . 2 ⊢ 0 ∈ ℝ | |
| 2 | ltpnf 13062 | . 2 ⊢ (0 ∈ ℝ → 0 < +∞) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ 0 < +∞ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2119 class class class wbr 5072 ℝcr 11028 0cc0 11029 +∞cpnf 11167 < clt 11170 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-ext 2711 ax-sep 5218 ax-pow 5294 ax-pr 5362 ax-un 7678 ax-cnex 11085 ax-1cn 11087 ax-addrcl 11090 ax-rnegex 11100 ax-cnre 11102 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-sb 2074 df-clab 2718 df-cleq 2731 df-clel 2814 df-ral 3054 df-rex 3064 df-rab 3392 df-v 3433 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-opab 5135 df-xp 5624 df-pnf 11172 df-xr 11174 df-ltxr 11175 |
| This theorem is referenced by: xmulgt0 13226 reltxrnmnf 13286 hashneq0 14317 hashge2el2dif 14433 sgnpnf 15046 pnfnei 23203 0bdop 32082 xlt2addrd 32851 xnn0gt0 32861 xrge0mulc1cn 34125 pnfneige0 34135 lmxrge0 34136 mbfposadd 38034 ftc1anclem5 38064 fourierdlem111 46660 fouriersw 46674 |
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