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Theorem gzcn 16979
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 16978 . 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 2108  cfv 6573  cc 11182  cz 12639  cre 15146  cim 15147  ℤ[i]cgz 16976
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1793  ax-4 1807  ax-5 1909  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-ext 2711
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 847  df-3an 1089  df-tru 1540  df-fal 1550  df-ex 1778  df-sb 2065  df-clab 2718  df-cleq 2732  df-clel 2819  df-rab 3444  df-v 3490  df-dif 3979  df-un 3981  df-ss 3993  df-nul 4353  df-if 4549  df-sn 4649  df-pr 4651  df-op 4655  df-uni 4932  df-br 5167  df-iota 6525  df-fv 6581  df-gz 16977
This theorem is referenced by:  gznegcl  16982  gzcjcl  16983  gzaddcl  16984  gzmulcl  16985  gzsubcl  16987  gzabssqcl  16988  4sqlem4a  16998  4sqlem4  16999  mul4sqlem  17000  mul4sq  17001  4sqlem12  17003  4sqlem17  17008  gzsubrg  21462  gzrngunitlem  21473  gzrngunit  21474  2sqlem2  27480  mul2sq  27481  2sqlem3  27482  cntotbnd  37756
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