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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 11144 | . 2 ⊢ 0 ∈ ℝ | |
| 2 | mnflt 13072 | . 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 5079 ℝcr 11035 0cc0 11036 -∞cmnf 11175 < clt 11177 |
| 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 2712 ax-sep 5225 ax-pow 5301 ax-pr 5369 ax-un 7685 ax-cnex 11092 ax-1cn 11094 ax-addrcl 11097 ax-rnegex 11107 ax-cnre 11109 |
| 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 2719 df-cleq 2732 df-clel 2815 df-ral 3055 df-rex 3065 df-rab 3393 df-v 3434 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-nul 4269 df-if 4462 df-pw 4538 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-br 5080 df-opab 5142 df-xp 5631 df-pnf 11179 df-mnf 11180 df-xr 11181 df-ltxr 11182 |
| This theorem is referenced by: ge0gtmnf 13122 xsubge0 13211 sgnmnf 15055 leordtval2 23202 mnfnei 23211 ovolicopnf 25516 voliunlem3 25544 volsup 25548 volivth 25599 itg2seq 25734 itg2monolem2 25743 deg1lt0 26081 plypf1 26202 xrge00 33100 dvasin 38078 readvrec2 42845 readvrec 42846 hbtlem5 43580 xrge0nemnfd 45784 xrpnf 45935 fourierdlem87 46643 fouriersw 46681 gsumge0cl 46821 sge0pr 46844 sge0ssre 46847 |
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