Abstract We consider the action of a semisimple Hopf algebra H on an m -Koszul Artin–Schelter regular A . Such is derivation-quotient for some twisted superpotential w , and we show that homological determinant can be easily calculated using Using this, smash product # also algebra, use this to explicitly determine quiver Λ which Morita equivalent, generalising result Bocklandt–Schedler–Wemyss....

Recently a self-calibrating SMASH technique, AUTO-SMASH, was described. This technique is based on PPA with RF coil arrays using auto-calibration signals. In AUTO-SMASH, important coil sensitivity information required for successful SMASH reconstruction is obtained during the actual scan using the correlation between undersampled SMASH signal data and additionally sampled calibration signals wi...

We prove very general formulae for the generating series of (Hodge) genera of symmetric products X with coefficients, which hold for complex quasi-projective varietiesX with any kind of singularities, and which include many of the classical results in the literature as special cases. Important specializations of our results include generating series for extensions of Hodge numbers and Hirzebruc...

It is well known that the cohomology of a tensor product is essentially the tensor product of the cohomologies. We look at twisted tensor products, and investigate to which extent this is still true. We give an explicit description of the Ext-algebra of the tensor product of two modules, and under certain additional conditions, describe an essential part of the Hochschild cohomology ring of a t...