| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > pnfged | Structured version Visualization version GIF version | ||
| Description: Plus infinity is an upper bound for extended reals. (Contributed by Glauco Siliprandi, 5-Feb-2022.) |
| Ref | Expression |
|---|---|
| pnfged.1 | ⊢ (𝜑 → 𝐴 ∈ ℝ*) |
| Ref | Expression |
|---|---|
| pnfged | ⊢ (𝜑 → 𝐴 ≤ +∞) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | pnfged.1 | . 2 ⊢ (𝜑 → 𝐴 ∈ ℝ*) | |
| 2 | pnfge 13181 | . 2 ⊢ (𝐴 ∈ ℝ* → 𝐴 ≤ +∞) | |
| 3 | 1, 2 | syl 18 | 1 ⊢ (𝜑 → 𝐴 ≤ +∞) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 class class class wbr 5103 +∞cpnf 11264 ℝ*cxr 11266 ≤ cle 11268 |
| 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 2732 ax-sep 5251 ax-pow 5330 ax-pr 5398 ax-un 7736 ax-cnex 11180 ax-resscn 11181 |
| 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 2739 df-cleq 2752 df-clel 2835 df-ne 2956 df-nel 3062 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 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 5661 df-cnv 5663 df-pnf 11269 df-mnf 11270 df-xr 11271 df-ltxr 11272 df-le 11273 |
| This theorem is used by: xrlimcnp 27205 lbslelsp 34108 xlimpnfvlem2 46665 xlimliminflimsup 46690 fourierdlem48 46982 fourierdlem113 47047 pimgtpnf2f 47533 pimiooltgt 47538 |
| Copyright terms: Public domain | W3C validator |