Moduli stacks of Serre stable representations in tilting theory
Abstract We introduce a new moduli stack, called the Serre stable moduli stack, which corresponds to studying families of point objects in an abelian category with a Serre functor. This allows us in particular, to re-interpret the classical derived equivalence between most concealed-canonical algebras and weighted projective lines by showing they are induced by the universal sheaf on the Serre stable moduli stack. We explain why the method works by showing that the Serre stable moduli stack is the tautological moduli problem that allows one to recover certain nice stacks such as weighted projective lines from their moduli of sheaves. As a result, this new stack should be of interest in both representation theory and algebraic geometry.
The paper has an investigation on the tensor products of semireal modules.The following result is obtained:The tensor product M_RN of R-modules M,N possesses an ordering if and only if X(M|R)∩X(N|R)≠ or P(M)∩P(N)≠.Furthermore,Theorem 5 is obtained when modules considered are finitely generated.