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Theorem gzcn 16898
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 16897 . 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 6494  cc 11031  cz 12519  cre 15054  cim 15055  ℤ[i]cgz 16895
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 3391  df-v 3432  df-dif 3893  df-un 3895  df-ss 3907  df-nul 4275  df-if 4468  df-sn 4569  df-pr 4571  df-op 4575  df-uni 4852  df-br 5087  df-iota 6450  df-fv 6502  df-gz 16896
This theorem is referenced by:  gznegcl  16901  gzcjcl  16902  gzaddcl  16903  gzmulcl  16904  gzsubcl  16906  gzabssqcl  16907  4sqlem4a  16917  4sqlem4  16918  mul4sqlem  16919  mul4sq  16920  4sqlem12  16922  4sqlem17  16927  gzsubrg  21415  gzrngunitlem  21426  gzrngunit  21427  2sqlem2  27399  mul2sq  27400  2sqlem3  27401  cntotbnd  38135
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