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| Mirrors > Home > MPE Home > Th. List > Mathboxes > bj-pinftynrr | Structured version Visualization version GIF version | ||
| Description: The extended complex number +∞ is not a complex number. (Contributed by BJ, 27-Jun-2019.) |
| Ref | Expression |
|---|---|
| bj-pinftynrr | ⊢ ¬ +∞ ∈ ℂ |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-bj-pinfty 37787 | . 2 ⊢ +∞ = (+∞ei‘0) | |
| 2 | bj-inftyexpidisj 37777 | . 2 ⊢ ¬ (+∞ei‘0) ∈ ℂ | |
| 3 | 1, 2 | eqneltri 2888 | 1 ⊢ ¬ +∞ ∈ ℂ |
| Colors of variables: wff setvar class |
| Syntax hints: ¬ wn 3 ∈ wcel 2149 ‘cfv 6537 ℂcc 11098 0cc0 11100 +∞eicinftyexpi 37773 +∞cpinfty 37786 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1822 ax-4 1836 ax-5 1937 ax-6 1994 ax-7 2035 ax-8 2151 ax-9 2159 ax-10 2182 ax-11 2198 ax-12 2219 ax-ext 2741 ax-sep 5259 ax-nul 5271 ax-pr 5405 ax-un 7733 ax-reg 9554 ax-cnex 11156 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1570 df-fal 1580 df-ex 1807 df-nf 1811 df-sb 2098 df-mo 2573 df-eu 2603 df-clab 2748 df-cleq 2761 df-clel 2844 df-nfc 2918 df-ne 2965 df-ral 3086 df-rex 3096 df-rab 3423 df-v 3463 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-nul 4293 df-if 4491 df-sn 4593 df-pr 4595 df-tp 4597 df-op 4599 df-uni 4875 df-br 5112 df-opab 5176 df-mpt 5195 df-id 5557 df-xp 5668 df-rel 5669 df-cnv 5670 df-co 5671 df-dm 5672 df-iota 6493 df-fun 6539 df-fn 6540 df-fv 6545 df-c 11106 df-bj-inftyexpi 37774 df-bj-pinfty 37787 |
| This theorem is referenced by: (None) |
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