<i>F</i>-Pure Homomorphisms, Strong<i>F</i>-regularity, and<i>F</i>-injectivity
<i>F</i>-Pure Homomorphisms, Strong<i>F</i>-regularity, and<i>F</i>-injectivity
We discuss Matijevic-Roberts type theorem on strong $F$-regularity, $F$-purity, and Cohen-Macaulay $F$-injective (CMFI for short) property. Related to this problem, we also discuss the base change problem and the openness of loci of these properties. In particular, we define the notion of $F$-purity of homomorphisms using Radu-Andre homomorphisms, and prove …