On subrings of amalgamated free products of rings
Tom 79 / 1999
Colloquium Mathematicum 79 (1999), 241-248
DOI: 10.4064/cm-79-2-241-248
Streszczenie
The aim of this paper is to develop the homological machinery needed to study amalgams of subrings. We follow Cohn [1] and describe an amalgam of subrings in terms of reduced iterated tensor products of the rings forming the amalgam and prove a result on embeddability of amalgamated free products. Finally we characterise the commutative perfect amalgamation bases.
