| 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 11172 | . . . 4 ⊢ +∞ = 𝒫 ∪ ℂ | |
| 2 | pwuninel 8219 | . . . 4 ⊢ ¬ 𝒫 ∪ ℂ ∈ ℂ | |
| 3 | 1, 2 | eqneltri 2856 | . . 3 ⊢ ¬ +∞ ∈ ℂ |
| 4 | recn 11120 | . . 3 ⊢ (+∞ ∈ ℝ → +∞ ∈ ℂ) | |
| 5 | 3, 4 | mto 197 | . 2 ⊢ ¬ +∞ ∈ ℝ |
| 6 | 5 | nelir 3040 | 1 ⊢ +∞ ∉ ℝ |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2114 ∉ wnel 3037 𝒫 cpw 4555 ∪ cuni 4864 ℂcc 11028 ℝcr 11029 +∞cpnf 11167 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-sep 5242 ax-pr 5378 ax-un 7682 ax-resscn 11087 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-nel 3038 df-rab 3401 df-v 3443 df-un 3907 df-in 3909 df-ss 3919 df-pw 4557 df-sn 4582 df-pr 4584 df-uni 4865 df-pnf 11172 |
| This theorem is referenced by: pnfnre2 11178 renepnf 11184 ltxrlt 11207 nn0nepnf 12486 xrltnr 13037 pnfnlt 13046 xnn0lenn0nn0 13164 hashclb 14285 hasheq0 14290 pcgcd1 16809 pc2dvds 16811 ramtcl2 16943 odhash3 19509 xrsdsreclblem 21371 pnfnei 23168 iccpnfcnv 24902 i1f0rn 25643 |
| Copyright terms: Public domain | W3C validator |