Gelvin, Matthew J. K.2020-02-212020-02-212019-05-260092-7872http://hdl.handle.net/11693/53462Let B be a p-block of the finite group G. We observe that the p-fusion of G constrains the module structure of B: Any basis of B that is closed under the left and right multiplications of a chosen Sylow p-subgroup S of G must in fact form a semicharacteristic biset for the fusion system on S induced by G. The parameterization of such semicharacteristic bisets can then be applied to relate the module structure and defect theory of B.EnglishBlocks of finite groupsCharacteristic bisetsFusion systemsArticle10.1080/00927872.2019.16178741532-4125