EntityQ1530791· pop 13· linked from 209 articlessquare-integrable functionSign in to savefunction whose squared absolute value has finite integralConnectionsinner product spaceEntityintegralEntityLebesgue integrationEntityLp spaceEntityweak topologyEntityreflexive spaceEntityconvex coneEntitymathematicsEntityInternational Standard Book NumberEntitycomplex numberEntityPythagorean theoremEntityreal numberEntityderivativeEntityprobability theoryEntityvector spaceEntityabsolute valueEntityHilbert spaceEntitylinear mapEntitycomplex conjugateEntitycauchy sequenceEntityCategoriesFunctional analysisLp spacesMathematical analysis