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Theorem gzcn 16858
Description: A gaussian integer is a complex number. (Contributed by Mario Carneiro, 14-Jul-2014.)
Assertion
Ref Expression
gzcn (𝐴 ∈ ℤ[i] → 𝐴 ∈ ℂ)

Proof of Theorem gzcn
StepHypRef Expression
1 elgz 16857 . 2 (𝐴 ∈ ℤ[i] ↔ (𝐴 ∈ ℂ ∧ (ℜ‘𝐴) ∈ ℤ ∧ (ℑ‘𝐴) ∈ ℤ))
21simp1bi 1145 1 (𝐴 ∈ ℤ[i] → 𝐴 ∈ ℂ)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2113  cfv 6490  cc 11022  cz 12486  cre 15018  cim 15019  ℤ[i]cgz 16855
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-ext 2706
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-sb 2068  df-clab 2713  df-cleq 2726  df-clel 2809  df-rab 3398  df-v 3440  df-dif 3902  df-un 3904  df-ss 3916  df-nul 4284  df-if 4478  df-sn 4579  df-pr 4581  df-op 4585  df-uni 4862  df-br 5097  df-iota 6446  df-fv 6498  df-gz 16856
This theorem is referenced by:  gznegcl  16861  gzcjcl  16862  gzaddcl  16863  gzmulcl  16864  gzsubcl  16866  gzabssqcl  16867  4sqlem4a  16877  4sqlem4  16878  mul4sqlem  16879  mul4sq  16880  4sqlem12  16882  4sqlem17  16887  gzsubrg  21374  gzrngunitlem  21385  gzrngunit  21386  2sqlem2  27383  mul2sq  27384  2sqlem3  27385  cntotbnd  37936
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