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 10666 | . . . 4 ⊢ +∞ = 𝒫 ∪ ℂ | |
2 | pwuninel 7924 | . . . 4 ⊢ ¬ 𝒫 ∪ ℂ ∈ ℂ | |
3 | 1, 2 | eqneltri 2883 | . . 3 ⊢ ¬ +∞ ∈ ℂ |
4 | recn 10616 | . . 3 ⊢ (+∞ ∈ ℝ → +∞ ∈ ℂ) | |
5 | 3, 4 | mto 200 | . 2 ⊢ ¬ +∞ ∈ ℝ |
6 | 5 | nelir 3094 | 1 ⊢ +∞ ∉ ℝ |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2111 ∉ wnel 3091 𝒫 cpw 4497 ∪ cuni 4800 ℂcc 10524 ℝcr 10525 +∞cpnf 10661 |
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 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pr 5295 ax-un 7441 ax-resscn 10583 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-nel 3092 df-rab 3115 df-v 3443 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4244 df-pw 4499 df-sn 4526 df-pr 4528 df-uni 4801 df-pnf 10666 |
This theorem is referenced by: pnfnre2 10672 renepnf 10678 ltxrlt 10700 nn0nepnf 11963 xrltnr 12502 pnfnlt 12511 xnn0lenn0nn0 12626 hashclb 13715 hasheq0 13720 pcgcd1 16203 pc2dvds 16205 ramtcl2 16337 odhash3 18693 xrsdsreclblem 20137 pnfnei 21825 iccpnfcnv 23549 i1f0rn 24286 |
Copyright terms: Public domain | W3C validator |