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Theorem 9cn 9392
Description: The number 9 is complex. (Contributed by David A. Wheeler, 8-Dec-2018.)
Assertion
Ref Expression
9cn  |-  9  e.  CC

Proof of Theorem 9cn
StepHypRef Expression
1 9re 9391 . 2  |-  9  e.  RR
21recni 8338 1  |-  9  e.  CC
Colors of variables:    wff set class
This proof depends on syntax axioms:    e. wcel 2209   CCcc 8177   9c9 9362
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-11 1559  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220  ax-resscn 8271  ax-1re 8273  ax-addrcl 8276
This proof depends on definitions:  df-bi 117  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-in 3226  df-ss 3233  df-2 9363  df-3 9364  df-4 9365  df-5 9366  df-6 9367  df-7 9368  df-8 9369  df-9 9370
This theorem is used by:  10m1e9  9872  9t2e18  9898  9t8e72  9904  9t9e81  9905  9t11e99  9906  0.999...  12288  cos2bnd  12527  3dvds  12631  3dvdsdec  12632  3dvds2dec  12633  2exp8  13214  log2tlbndlog2  16082  log2ublem3  16085  log2ublog2  16086
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