| 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 11158 | . . . 4 ⊢ +∞ = 𝒫 ∪ ℂ | |
| 2 | pwuninel 8214 | . . . 4 ⊢ ¬ 𝒫 ∪ ℂ ∈ ℂ | |
| 3 | 1, 2 | eqneltri 2852 | . . 3 ⊢ ¬ +∞ ∈ ℂ |
| 4 | recn 11106 | . . 3 ⊢ (+∞ ∈ ℝ → +∞ ∈ ℂ) | |
| 5 | 3, 4 | mto 197 | . 2 ⊢ ¬ +∞ ∈ ℝ |
| 6 | 5 | nelir 3037 | 1 ⊢ +∞ ∉ ℝ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2113 ∉ wnel 3034 𝒫 cpw 4551 ∪ cuni 4860 ℂcc 11014 ℝcr 11015 +∞cpnf 11153 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-ext 2705 ax-sep 5238 ax-pr 5374 ax-un 7677 ax-resscn 11073 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-ex 1781 df-sb 2068 df-clab 2712 df-cleq 2725 df-clel 2808 df-nel 3035 df-rab 3398 df-v 3440 df-un 3904 df-in 3906 df-ss 3916 df-pw 4553 df-sn 4578 df-pr 4580 df-uni 4861 df-pnf 11158 |
| This theorem is referenced by: pnfnre2 11164 renepnf 11170 ltxrlt 11193 nn0nepnf 12472 xrltnr 13028 pnfnlt 13037 xnn0lenn0nn0 13154 hashclb 14275 hasheq0 14280 pcgcd1 16799 pc2dvds 16801 ramtcl2 16933 odhash3 19498 xrsdsreclblem 21359 pnfnei 23145 iccpnfcnv 24879 i1f0rn 25620 |
| Copyright terms: Public domain | W3C validator |