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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 11291 | . 2 ⊢ 0 ∈ ℝ | |
| 2 | mnflt 13233 | . 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 2145 class class class wbr 5103 ℝcr 11180 0cc0 11181 -∞cmnf 11322 < clt 11324 |
| 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 2147 ax-9 2155 ax-ext 2733 ax-sep 5249 ax-pow 5327 ax-pr 5391 ax-un 7740 ax-cnex 11237 ax-1cn 11239 ax-addrcl 11242 ax-rnegex 11252 ax-cnre 11254 |
| 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 2740 df-cleq 2753 df-clel 2836 df-ral 3078 df-rex 3088 df-rab 3414 df-v 3453 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-xp 5657 df-pnf 11326 df-mnf 11327 df-xr 11328 df-ltxr 11329 |
| This theorem is used by: ge0gtmnf 13283 xsubge0 13372 sgnmnf 15228 leordtval2 23510 mnfnei 23519 ovolicopnf 25825 voliunlem3 25853 volsup 25857 volivth 25908 itg2seq 26043 itg2monolem2 26052 deg1lt0 26389 plypf1 26511 xrge00 33557 dvasin 38590 readvrec2 43380 readvrec 43381 hbtlem5 44088 xrge0nemnfd 46288 xrpnf 46439 fourierdlem87 47147 fouriersw 47185 gsumge0cl 47325 sge0pr 47348 sge0ssre 47351 |
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