EntityQ1422083· pop 6· linked from 8 articlesRyll-Nardzewski fixed-point theoremSign in to savetheoremConnectionsnormed vector spaceEntityInternational Standard Book NumberEntitydigital object identifierEntitygroupEntityHilbert spaceEntityfunctional analysisEntityRiemann hypothesisEntityNicolas BourbakiEntitycalculus of variationsEntityconvex setEntitysemigroupEntityBanach spaceEntitycompact spaceEntityfixed pointEntityisometryEntityaffine transformationEntityinner product spaceEntitydual spaceEntitydistributionEntitytopological vector spaceEntityCategoriesFixed-point theoremsTheorems in functional analysis