Database
SUPPLEMENTARY MATERIAL (USERS' MATHBOXES)
Mathbox for Thierry Arnoux
Algebra
The archimedean ordered field of real numbers
cnfldfld
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reofld
Metamath Proof Explorer
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Theorem
cnfldfld
Description:
The complex numbers form a field.
(Contributed by
Thierry Arnoux
, 6-Jul-2025)
Ref
Expression
Assertion
cnfldfld
⊢
ℂ
fld
∈
Field
Proof
Step
Hyp
Ref
Expression
1
cndrng
⊢
ℂ
fld
∈
DivRing
2
cncrng
⊢
ℂ
fld
∈
CRing
3
isfld
⊢
ℂ
fld
∈
Field
↔
ℂ
fld
∈
DivRing
∧
ℂ
fld
∈
CRing
4
1
2
3
mpbir2an
⊢
ℂ
fld
∈
Field