EntityQ3527215· pop 5· linked from 52 articlesHilbert projection theoremSign in to saveon closed convex subsets in Hilbert spaceConnectionsinner product spaceEntitymaxima and minimaEntityInternational Standard Book NumberEntitydigital object identifierEntityconeEntityInternational Standard Serial NumberEntityscalar productEntityOCLC, Inc.EntityHilbert spaceEntityfunctional analysisEntityRiemann hypothesisEntitylinear mapEntityhomeomorphismEntitycalculus of variationsEntitycauchy sequenceEntitymedianEntityCauchy–Schwarz inequalityEntityBanach spaceEntitynormed vector spaceEntitysqueeze theoremEntityCategoriesConvex analysisTheorems in functional analysis