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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 11337 | . 2 ⊢ 0 ∈ ℝ | |
| 2 | mnflt 13279 | . 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 2147 class class class wbr 5106 ℝcr 11226 0cc0 11227 -∞cmnf 11368 < clt 11370 |
| 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 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 ax-sep 5252 ax-pow 5331 ax-pr 5395 ax-un 7775 ax-cnex 11283 ax-1cn 11285 ax-addrcl 11288 ax-rnegex 11298 ax-cnre 11300 |
| 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 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-ral 3081 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-opab 5171 df-xp 5661 df-pnf 11372 df-mnf 11373 df-xr 11374 df-ltxr 11375 |
| This theorem is used by: ge0gtmnf 13329 xsubge0 13418 sgnmnf 15277 leordtval2 23560 mnfnei 23569 ovolicopnf 25875 voliunlem3 25903 volsup 25907 volivth 25958 itg2seq 26093 itg2monolem2 26102 deg1lt0 26439 plypf1 26561 xrge00 33645 dvasin 38814 readvrec2 43605 readvrec 43606 hbtlem5 44322 xrge0nemnfd 46549 xrpnf 46700 fourierdlem87 47408 fouriersw 47446 gsumge0cl 47586 sge0pr 47609 sge0ssre 47612 |
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