Abstract
For three dimensional cyclic quotient singularities of type 1r(1,a,r−a−1) (resp. type 1r(1,a,r−a)), the Fujiki-Oka resolution coincides with one of crepant resolutions (resp. an economic resolution). In this paper, we will characterize binary trees which gives the Fujiki-Oka resolution for the above two series of cyclic quotient singularities.
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