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Theorem 9cn 9290
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 9289 . 2  |-  9  e.  RR
21recni 8251 1  |-  9  e.  CC
Colors of variables: wff set class
Syntax hints:    e. wcel 2202   CCcc 8090   9c9 9260
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-11 1555  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2213  ax-resscn 8184  ax-1re 8186  ax-addrcl 8189
This theorem depends on definitions:  df-bi 117  df-nf 1510  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-in 3207  df-ss 3214  df-2 9261  df-3 9262  df-4 9263  df-5 9264  df-6 9265  df-7 9266  df-8 9267  df-9 9268
This theorem is referenced by:  10m1e9  9767  9t2e18  9793  9t8e72  9799  9t9e81  9800  9t11e99  9801  0.999...  12162  cos2bnd  12401  3dvds  12505  3dvdsdec  12506  3dvds2dec  12507  2exp8  13088
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