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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 11228 | . 2 ⊢ 0 ∈ ℝ | |
| 2 | mnflt 13166 | . 2 ⊢ (0 ∈ ℝ → -∞ < 0) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ -∞ < 0 |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ∈ wcel 2146 class class class wbr 5114 ℝcr 11117 0cc0 11118 -∞cmnf 11259 < clt 11261 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-ext 2738 ax-sep 5262 ax-pow 5341 ax-pr 5409 ax-un 7745 ax-cnex 11174 ax-1cn 11176 ax-addrcl 11179 ax-rnegex 11189 ax-cnre 11191 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2100 df-clab 2745 df-cleq 2758 df-clel 2841 df-ral 3083 df-rex 3093 df-rab 3420 df-v 3460 df-dif 3911 df-un 3913 df-in 3915 df-ss 3925 df-nul 4290 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4878 df-br 5115 df-opab 5179 df-xp 5672 df-pnf 11263 df-mnf 11264 df-xr 11265 df-ltxr 11266 |
| This theorem is used by: ge0gtmnf 13216 xsubge0 13305 sgnmnf 15158 leordtval2 23406 mnfnei 23415 ovolicopnf 25720 voliunlem3 25748 volsup 25752 volivth 25803 itg2seq 25938 itg2monolem2 25947 deg1lt0 26285 plypf1 26406 xrge00 33365 dvasin 38396 readvrec2 43163 readvrec 43164 hbtlem5 43896 xrge0nemnfd 46089 xrpnf 46240 fourierdlem87 46948 fouriersw 46986 gsumge0cl 47126 sge0pr 47149 sge0ssre 47152 |
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