Spherical subcategories in algebraic geometry
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algebraicgeometryobjectsphericaltriangulatedalgebraappliedcategories
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We study objects in triangulated categories which have a two-dimensional graded endomorphism algebra. Given such an object, we show that there is a unique maximal triangulated subcategory, in which the object is spherical. This general result is then applied to algebraic geometry.
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