Some authors regard gambling as an addiction. Detailed psychiatric examination revealed obsessive-compulsive syndrome in this patient. He was treated systematically with individual psychotherapy and sertraline from low doses up to the maximal dose (i.e. about 200 mg daily). A complete remission of the obsessive-compulsive syndrome was achieved. A number of indirect proofs demonstrate a signific...

In this paper, we introduce the notions of expansion of ideals in $MV$-algebras, $ (tau,sigma)- $primary, $ (tau,sigma)$-obstinate  and $ (tau,sigma)$-Boolean  in $ MV- $algebras. We investigate the relations of them. For example, we show that every $ (tau,sigma)$-obstinate ideal of an $ MV-$ algebra is $ (tau,sigma)$-primary  and $ (tau,sigma)$-Boolean. In particular, we define an expansion $ ...