Collins, John, 1981-2010-02-252010-02-252009-06https://hdl.handle.net/1794/10218vi, 85 p. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.We define and study a gluing procedure for Bridgeland stability conditions in the situation where a triangulated category has a semiorthogonal decomposition. As one application, we construct an open, contractible subset U in the stability manifold of the derived category [Special characters omitted.] of [Special characters omitted.] -equivariant coherent sheaves on a smooth curve X , associated with a degree 2 map X [arrow right] Y , where Y is another curve. In the case where X is an elliptic curve we construct an open, connected subset in the stability manifold using exceptional collections containing the subset U . We also give a new proof of the constructibility of exceptional collections on [Special characters omitted.] . This dissertation contains previously unpublished co-authored material.en-USStability conditionsEquivariant sheavesDerived categoriesElliptic curveMathematicsThesis