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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 11313 | . 2 ⊢ 0 ∈ ℝ | |
| 2 | mnflt 13255 | . 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 2144 class class class wbr 5102 ℝcr 11202 0cc0 11203 -∞cmnf 11344 < clt 11346 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-ext 2732 ax-sep 5248 ax-pow 5326 ax-pr 5390 ax-un 7751 ax-cnex 11259 ax-1cn 11261 ax-addrcl 11264 ax-rnegex 11274 ax-cnre 11276 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-sb 2099 df-clab 2739 df-cleq 2752 df-clel 2835 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3896 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-xp 5656 df-pnf 11348 df-mnf 11349 df-xr 11350 df-ltxr 11351 |
| This theorem is used by: ge0gtmnf 13305 xsubge0 13394 sgnmnf 15253 leordtval2 23535 mnfnei 23544 ovolicopnf 25850 voliunlem3 25878 volsup 25882 volivth 25933 itg2seq 26068 itg2monolem2 26077 deg1lt0 26414 plypf1 26536 xrge00 33621 dvasin 38715 readvrec2 43505 readvrec 43506 hbtlem5 44223 xrge0nemnfd 46437 xrpnf 46588 fourierdlem87 47296 fouriersw 47334 gsumge0cl 47474 sge0pr 47497 sge0ssre 47500 |
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