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Theorem gzcn 16874
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 16873 . 2 (𝐴 ∈ ℤ[i] ↔ (𝐴 ∈ ℂ ∧ (ℜ‘𝐴) ∈ ℤ ∧ (ℑ‘𝐴) ∈ ℤ))
21simp1bi 1146 1 (𝐴 ∈ ℤ[i] → 𝐴 ∈ ℂ)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wcel 2114  cfv 6502  cc 11038  cz 12502  cre 15034  cim 15035  ℤ[i]cgz 16871
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-ext 2709
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-sb 2069  df-clab 2716  df-cleq 2729  df-clel 2812  df-rab 3402  df-v 3444  df-dif 3906  df-un 3908  df-ss 3920  df-nul 4288  df-if 4482  df-sn 4583  df-pr 4585  df-op 4589  df-uni 4866  df-br 5101  df-iota 6458  df-fv 6510  df-gz 16872
This theorem is referenced by:  gznegcl  16877  gzcjcl  16878  gzaddcl  16879  gzmulcl  16880  gzsubcl  16882  gzabssqcl  16883  4sqlem4a  16893  4sqlem4  16894  mul4sqlem  16895  mul4sq  16896  4sqlem12  16898  4sqlem17  16903  gzsubrg  21393  gzrngunitlem  21404  gzrngunit  21405  2sqlem2  27402  mul2sq  27403  2sqlem3  27404  cntotbnd  38076
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