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| Mirrors > Home > MPE Home > Th. List > mnflt0 | Structured version Visualization version GIF version | ||
| Description: Minus infinity is less than 0. (Contributed by David A. Wheeler, 8-Dec-2018.) |
| Ref | Expression |
|---|---|
| mnflt0 | ⊢ -∞ < 0 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0re 11180 | . 2 ⊢ 0 ∈ ℝ | |
| 2 | mnflt 13122 | . 2 ⊢ (0 ∈ ℝ → -∞ < 0) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ -∞ < 0 |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2141 class class class wbr 5099 ℝcr 11069 0cc0 11070 -∞cmnf 11211 < clt 11213 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 ax-sep 5245 ax-pow 5321 ax-pr 5389 ax-un 7714 ax-cnex 11126 ax-1cn 11128 ax-addrcl 11131 ax-rnegex 11141 ax-cnre 11143 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-br 5100 df-opab 5162 df-xp 5651 df-pnf 11215 df-mnf 11216 df-xr 11217 df-ltxr 11218 |
| This theorem is referenced by: ge0gtmnf 13172 xsubge0 13261 sgnmnf 15105 leordtval2 23252 mnfnei 23261 ovolicopnf 25566 voliunlem3 25594 volsup 25598 volivth 25649 itg2seq 25784 itg2monolem2 25793 deg1lt0 26131 plypf1 26252 xrge00 33153 dvasin 38167 readvrec2 42934 readvrec 42935 hbtlem5 43669 xrge0nemnfd 45872 xrpnf 46023 fourierdlem87 46731 fouriersw 46769 gsumge0cl 46909 sge0pr 46932 sge0ssre 46935 |
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