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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 11237 | . 2 ⊢ 0 ∈ ℝ | |
| 2 | ltpnf 13136 | . 2 ⊢ (0 ∈ ℝ → 0 < +∞) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ 0 < +∞ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2108 class class class wbr 5119 ℝcr 11128 0cc0 11129 +∞cpnf 11266 < clt 11269 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-ext 2707 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 ax-un 7729 ax-cnex 11185 ax-1cn 11187 ax-addrcl 11190 ax-rnegex 11200 ax-cnre 11202 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-sb 2065 df-clab 2714 df-cleq 2727 df-clel 2809 df-ral 3052 df-rex 3061 df-rab 3416 df-v 3461 df-dif 3929 df-un 3931 df-ss 3943 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-op 4608 df-uni 4884 df-br 5120 df-opab 5182 df-xp 5660 df-pnf 11271 df-xr 11273 df-ltxr 11274 |
| This theorem is referenced by: xmulgt0 13299 reltxrnmnf 13359 hashneq0 14382 hashge2el2dif 14498 sgnpnf 15112 pnfnei 23158 0bdop 31974 xlt2addrd 32736 xnn0gt0 32746 xrge0mulc1cn 33972 pnfneige0 33982 lmxrge0 33983 mbfposadd 37691 ftc1anclem5 37721 fourierdlem111 46246 fouriersw 46260 |
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