Bourbaki

Corollary

Tag 05II, permanent. Cite it as [Bourbaki, Tag 05II].

Algebra, chapter I, § 9. Fields

The centre of a field KK is a (commutative) subfield of KK.

Bourbaki puts the proof directly after the statement, so what is above is the statement and its proof together.

Cited by

Nothing.

Cites

Nothing.

Transcribed from the printed edition, 1998, Springer. Not translated.