Minimal injective resolutions under flat base change
Minimal injective resolutions under flat base change
For a flat morphism <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="phi colon upper A right-arrow upper B"> <mml:semantics> <mml:mrow> <mml:mi>φ<!-- φ --></mml:mi> <mml:mo>:</mml:mo> <mml:mi>A</mml:mi> <mml:mo stretchy="false">→<!-- → --></mml:mo> <mml:mi>B</mml:mi> </mml:mrow> <mml:annotation encoding="application/x-tex">\varphi :A \to B</mml:annotation> </mml:semantics> </mml:math> </inline-formula> of noetherian rings, the minimal injective resolution of the <italic>B</italic>-module <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" …