An explicit description of the second cohomology group of a quandle
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cohomologydescriptionexplicitgroupabelianapplicationscocyclesetingof
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We use the inflation-restriction sequence and a result of Etingof and Gra\~na on the rack cohomology to give a explicit description of 2-cocycles of finite indecomposable quandles with values in an abelian group. Several applications are given.
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