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Theorem bj-minftynrr 34502
Description: The extended complex number -∞ is not a complex number. (Contributed by BJ, 27-Jun-2019.)
Assertion
Ref Expression
bj-minftynrr ¬ -∞ ∈ ℂ

Proof of Theorem bj-minftynrr
StepHypRef Expression
1 df-bj-minfty 34500 . 2 -∞ = (+∞ei‘π)
2 bj-inftyexpidisj 34486 . 2 ¬ (+∞ei‘π) ∈ ℂ
31, 2eqneltri 2906 1 ¬ -∞ ∈ ℂ
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wcel 2110  cfv 6349  cc 10529  πcpi 15414  +∞eicinftyexpi 34482  -∞cminfty 34499
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1792  ax-4 1806  ax-5 1907  ax-6 1966  ax-7 2011  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2157  ax-12 2173  ax-ext 2793  ax-sep 5195  ax-nul 5202  ax-pow 5258  ax-pr 5321  ax-un 7455  ax-reg 9050  ax-cnex 10587
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-3or 1084  df-3an 1085  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-mo 2618  df-eu 2650  df-clab 2800  df-cleq 2814  df-clel 2893  df-nfc 2963  df-ne 3017  df-ral 3143  df-rex 3144  df-rab 3147  df-v 3496  df-sbc 3772  df-dif 3938  df-un 3940  df-in 3942  df-ss 3951  df-nul 4291  df-if 4467  df-sn 4561  df-pr 4563  df-tp 4565  df-op 4567  df-uni 4832  df-br 5059  df-opab 5121  df-mpt 5139  df-id 5454  df-xp 5555  df-rel 5556  df-cnv 5557  df-co 5558  df-dm 5559  df-iota 6308  df-fun 6351  df-fn 6352  df-fv 6357  df-c 10537  df-bj-inftyexpi 34483  df-bj-minfty 34500
This theorem is referenced by: (None)
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