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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 11183 | . 2 ⊢ 0 ∈ ℝ | |
| 2 | ltpnf 13122 | . 2 ⊢ (0 ∈ ℝ → 0 < +∞) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ 0 < +∞ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2142 class class class wbr 5100 ℝcr 11072 0cc0 11073 +∞cpnf 11213 < clt 11216 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1815 ax-4 1829 ax-5 1930 ax-6 1987 ax-7 2028 ax-8 2144 ax-9 2152 ax-ext 2734 ax-sep 5246 ax-pow 5322 ax-pr 5390 ax-un 7718 ax-cnex 11129 ax-1cn 11131 ax-addrcl 11134 ax-rnegex 11144 ax-cnre 11146 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1100 df-tru 1563 df-fal 1573 df-ex 1800 df-sb 2091 df-clab 2741 df-cleq 2754 df-clel 2837 df-ral 3077 df-rex 3087 df-rab 3415 df-v 3456 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4481 df-pw 4557 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-br 5101 df-opab 5163 df-xp 5653 df-pnf 11218 df-xr 11220 df-ltxr 11221 |
| This theorem is referenced by: xmulgt0 13286 reltxrnmnf 13346 hashneq0 14377 hashge2el2dif 14493 sgnpnf 15106 pnfnei 23277 0bdop 32193 xlt2addrd 32958 xnn0gt0 32968 xrge0mulc1cn 34235 pnfneige0 34245 lmxrge0 34246 mbfposadd 38163 ftc1anclem5 38193 fourierdlem111 46788 fouriersw 46802 |
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