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Theorem 0cnALT3 40290
Description: Alternate proof of 0cn 10967 using ax-resscn 10928, ax-addrcl 10932, ax-rnegex 10942, ax-cnre 10944 instead of ax-icn 10930, ax-addcl 10931, ax-mulcl 10933, ax-i2m1 10939. Version of 0cnALT 11209 using ax-1cn 10929 instead of ax-icn 10930. (Contributed by Steven Nguyen, 7-Jan-2022.) (Proof modification is discouraged.) (New usage is discouraged.)
Assertion
Ref Expression
0cnALT3 0 ∈ ℂ

Proof of Theorem 0cnALT3
StepHypRef Expression
1 0re 10977 . 2 0 ∈ ℝ
21recni 10989 1 0 ∈ ℂ
Colors of variables: wff setvar class
Syntax hints:  wcel 2106  cc 10869  0cc0 10871
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1798  ax-4 1812  ax-5 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-ext 2709  ax-resscn 10928  ax-1cn 10929  ax-addrcl 10932  ax-rnegex 10942  ax-cnre 10944
This theorem depends on definitions:  df-bi 206  df-an 397  df-tru 1542  df-ex 1783  df-sb 2068  df-clab 2716  df-cleq 2730  df-clel 2816  df-ral 3069  df-rex 3070  df-v 3434  df-in 3894  df-ss 3904
This theorem is referenced by: (None)
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