We show that exceptional sequences for hereditary algebras are characterized by the fact that the product of the corresponding reflections is the inverse Coxeter element in the Weyl group. We use this result to give a new combinatorial characterization of clusters tilting sets in the cluster category in the case where the hereditary algebra is of finite type.

the hypothesis that mitochondrial genes may be implicated in susceptibility to multiple sclerosis (ms) is supported by an increasing number of case reports on lebers hereditary optic neuropathy (lhon)-associated mitochondrial dna (mtdna) point mutations in patients with ms. a number of mtdna mutations with primary pathogenic significance for lhon, a maternally inherited disease causing severe b...

the hypothesis that mitochondrial genes may be implicated in susceptibility to multiple sclerosis (ms) is supported by an increasing number of case reports on lebers hereditary optic neuropathy (lhon)-associated mitochondrial dna (mtdna) point mutations in patients with ms. a number of mtdna mutations with primary pathogenic significance for lhon, a maternally inherited disease causing severe b...