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Theorem 0cnALT3 39146
Description: Alternate proof of 0cn 10627 using ax-resscn 10588, ax-addrcl 10592, ax-rnegex 10602, ax-cnre 10604 instead of ax-icn 10590, ax-addcl 10591, ax-mulcl 10593, ax-i2m1 10599. Version of 0cnALT 10868 using ax-1cn 10589 instead of ax-icn 10590. (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 10637 . 2 0 ∈ ℝ
21recni 10649 1 0 ∈ ℂ
Colors of variables: wff setvar class
Syntax hints:  wcel 2110  cc 10529  0cc0 10531
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 2156  ax-12 2172  ax-ext 2793  ax-resscn 10588  ax-1cn 10589  ax-addrcl 10592  ax-rnegex 10602  ax-cnre 10604
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 844  df-tru 1536  df-ex 1777  df-nf 1781  df-sb 2066  df-clab 2800  df-cleq 2814  df-clel 2893  df-ral 3143  df-rex 3144  df-in 3943  df-ss 3952
This theorem is referenced by: (None)
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