| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > pnfge | Structured version Visualization version GIF version | ||
| Description: Plus infinity is an upper bound for extended reals. (Contributed by NM, 30-Jan-2006.) |
| Ref | Expression |
|---|---|
| pnfge | ⊢ (𝐴 ∈ ℝ* → 𝐴 ≤ +∞) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pnfnlt 13152 | . 2 ⊢ (𝐴 ∈ ℝ* → ¬ +∞ < 𝐴) | |
| 2 | pnfxr 11262 | . . 3 ⊢ +∞ ∈ ℝ* | |
| 3 | xrlenlt 11273 | . . 3 ⊢ ((𝐴 ∈ ℝ* ∧ +∞ ∈ ℝ*) → (𝐴 ≤ +∞ ↔ ¬ +∞ < 𝐴)) | |
| 4 | 2, 3 | mpan2 703 | . 2 ⊢ (𝐴 ∈ ℝ* → (𝐴 ≤ +∞ ↔ ¬ +∞ < 𝐴)) |
| 5 | 1, 4 | mpbird 260 | 1 ⊢ (𝐴 ∈ ℝ* → 𝐴 ≤ +∞) |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 → wi 4 ↔ wb 209 ∈ wcel 2149 class class class wbr 5113 +∞cpnf 11239 ℝ*cxr 11241 < clt 11242 ≤ cle 11243 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-ext 2741 ax-sep 5261 ax-pow 5337 ax-pr 5405 ax-un 7733 ax-cnex 11155 ax-resscn 11156 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-sb 2098 df-clab 2748 df-cleq 2761 df-clel 2844 df-ne 2965 df-nel 3071 df-ral 3086 df-rex 3096 df-rab 3424 df-v 3465 df-dif 3916 df-un 3918 df-in 3920 df-ss 3930 df-nul 4295 df-if 4493 df-pw 4569 df-sn 4595 df-pr 4597 df-op 4601 df-uni 4877 df-br 5114 df-opab 5178 df-xp 5668 df-cnv 5670 df-pnf 11244 df-mnf 11245 df-xr 11246 df-ltxr 11247 df-le 11248 |
| This theorem is referenced by: pnfged 13155 xnn0n0n1ge2b 13156 0lepnf 13157 nltpnft 13189 xrre2 13195 xnn0lem1lt 13269 xleadd1a 13278 xlt2add 13285 xsubge0 13286 xlesubadd 13288 xlemul1a 13313 elicore 13424 elico2 13436 iccmax 13449 elxrge0 13483 nfile 14394 hashdom 14414 hashdomi 14415 hashge1 14424 hashss 14444 hashge2el2difr 14517 pcdvdsb 16928 pc2dvds 16938 pcaddlem 16947 xrsdsreclblem 21531 leordtvallem1 23335 lecldbas 23344 isxmet2d 24452 blssec 24560 nmoix 24854 nmoleub 24856 xrtgioo 24932 xrge0tsms 24960 metdstri 24977 nmoleub2lem 25241 ovolf 25609 ovollb2 25616 ovoliun 25632 ovolre 25652 voliunlem3 25679 volsup 25683 icombl 25691 ioombl 25692 ismbfd 25766 itg2seq 25869 dvfsumrlim 26158 dvfsumrlim2 26159 radcnvcl 26545 logfacbnd3 27352 log2sumbnd 27673 tgldimor 28736 xrdifh 33065 xrge0tsmsd 33333 unitssxrge0 34234 tpr2rico 34246 lmxrge0 34286 esumle 34392 esumlef 34396 esumpinfval 34407 esumpinfsum 34411 esumcvgsum 34422 ddemeas 34570 sxbrsigalem2 34620 omssubadd 34634 carsgclctunlem3 34654 signsply0 34882 ismblfin 38199 xrgepnfd 45938 supxrgelem 45944 supxrge 45945 infrpge 45958 xrlexaddrp 45959 infleinflem1 45976 infleinf 45978 infxrpnf 46051 ge0xrre 46138 iblsplit 46571 ismbl3 46591 ovolsplit 46593 sge0cl 46986 sge0less 46997 sge0pr 46999 sge0le 47012 sge0split 47014 carageniuncl 47128 ovnsubaddlem1 47175 hspmbl 47234 pgrpgt2nabl 49030 |
| Copyright terms: Public domain | W3C validator |