We continue our study of topological partial *algebras focusing our attention to some basic spectral properties. The special case of partial *-algebras of operators is examined first, in order to find sufficient hints for the study of the abstract case. The outcome consists in the selection of a class of topological partial *-algebras (partial GC*-algebras) that behave well from the spectral point of view and that allow, under certain conditions, a faithful realization as a partial O*-algebra.
Antoine, J.-P., Trapani, C., & Tschinke, F. (2010). Spectral properties of partial *-algebras. Mediterranean Journal of Mathematics, 7(2), 123-142. https://doi.org/10.1007/s00009-010-0034-3 (Original work published 2010)