![]() |
Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
|
Mirrors > Home > MPE Home > Th. List > pnfnre | Structured version Visualization version GIF version |
Description: Plus infinity is not a real number. (Contributed by NM, 13-Oct-2005.) |
Ref | Expression |
---|---|
pnfnre | ⊢ +∞ ∉ ℝ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-pnf 11200 | . . . 4 ⊢ +∞ = 𝒫 ∪ ℂ | |
2 | pwuninel 8211 | . . . 4 ⊢ ¬ 𝒫 ∪ ℂ ∈ ℂ | |
3 | 1, 2 | eqneltri 2851 | . . 3 ⊢ ¬ +∞ ∈ ℂ |
4 | recn 11150 | . . 3 ⊢ (+∞ ∈ ℝ → +∞ ∈ ℂ) | |
5 | 3, 4 | mto 196 | . 2 ⊢ ¬ +∞ ∈ ℝ |
6 | 5 | nelir 3048 | 1 ⊢ +∞ ∉ ℝ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2106 ∉ wnel 3045 𝒫 cpw 4565 ∪ cuni 4870 ℂcc 11058 ℝcr 11059 +∞cpnf 11195 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-ext 2702 ax-sep 5261 ax-pr 5389 ax-un 7677 ax-resscn 11117 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-tru 1544 df-ex 1782 df-sb 2068 df-clab 2709 df-cleq 2723 df-clel 2809 df-nel 3046 df-rab 3406 df-v 3448 df-un 3918 df-in 3920 df-ss 3930 df-pw 4567 df-sn 4592 df-pr 4594 df-uni 4871 df-pnf 11200 |
This theorem is referenced by: pnfnre2 11206 renepnf 11212 ltxrlt 11234 nn0nepnf 12502 xrltnr 13049 pnfnlt 13058 xnn0lenn0nn0 13174 hashclb 14268 hasheq0 14273 pcgcd1 16760 pc2dvds 16762 ramtcl2 16894 odhash3 19372 xrsdsreclblem 20880 pnfnei 22608 iccpnfcnv 24344 i1f0rn 25083 |
Copyright terms: Public domain | W3C validator |