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Theorem 7cn 8074
Description: The number 7 is complex. (Contributed by David A. Wheeler, 8-Dec-2018.)
Assertion
Ref Expression
7cn 7 ∈ ℂ

Proof of Theorem 7cn
StepHypRef Expression
1 7re 8073 . 2 7 ∈ ℝ
21recni 7097 1 7 ∈ ℂ
Colors of variables: wff set class
Syntax hints:  wcel 1409  cc 6945  7c7 8045
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 103  ax-ia2 104  ax-ia3 105  ax-5 1352  ax-7 1353  ax-gen 1354  ax-ie1 1398  ax-ie2 1399  ax-8 1411  ax-11 1413  ax-4 1416  ax-17 1435  ax-i9 1439  ax-ial 1443  ax-i5r 1444  ax-ext 2038  ax-resscn 7034  ax-1re 7036  ax-addrcl 7039
This theorem depends on definitions:  df-bi 114  df-nf 1366  df-sb 1662  df-clab 2043  df-cleq 2049  df-clel 2052  df-in 2952  df-ss 2959  df-2 8049  df-3 8050  df-4 8051  df-5 8052  df-6 8053  df-7 8054
This theorem is referenced by:  7p2e9  8134  7p3e10  8501  7t2e14  8535  7t4e28  8537  7t7e49  8540
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