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Mirrors > Home > MPE Home > Th. List > pnfnre2 | Structured version Visualization version GIF version |
Description: Plus infinity is not a real number. (Contributed by Glauco Siliprandi, 23-Oct-2021.) |
Ref | Expression |
---|---|
pnfnre2 | ⊢ ¬ +∞ ∈ ℝ |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | pnfnre 10670 | . 2 ⊢ +∞ ∉ ℝ | |
2 | 1 | neli 3122 | 1 ⊢ ¬ +∞ ∈ ℝ |
Colors of variables: wff setvar class |
Syntax hints: ¬ wn 3 ∈ wcel 2105 ℝcr 10524 +∞cpnf 10660 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1787 ax-4 1801 ax-5 1902 ax-6 1961 ax-7 2006 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2151 ax-12 2167 ax-ext 2790 ax-sep 5194 ax-nul 5201 ax-pr 5320 ax-un 7450 ax-resscn 10582 |
This theorem depends on definitions: df-bi 208 df-an 397 df-or 842 df-3an 1081 df-tru 1531 df-ex 1772 df-nf 1776 df-sb 2061 df-clab 2797 df-cleq 2811 df-clel 2890 df-nfc 2960 df-nel 3121 df-rex 3141 df-rab 3144 df-v 3494 df-dif 3936 df-un 3938 df-in 3940 df-ss 3949 df-nul 4289 df-pw 4537 df-sn 4558 df-pr 4560 df-uni 4831 df-pnf 10665 |
This theorem is referenced by: nn0xmulclb 30422 |
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