On the existence and construction of proper costratifying systems
classification
🧮 math.RT
keywords
systemscostratifyingpropercitedefinedexistenceaenzconditions
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In this paper we further study the notion of proper costratifying systems, defined in \cite{MPV}. We give sufficient conditions for their existence, and investigate the relation between the stratifying systems defined by K. Erdmann and C. S\'aenz in \cite{ES} with the proper costratifying systems.
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