SUPERCONVERGENCE OF RITZ-VOLTERRA PROJECTION ON FINITE ELEMENT SPACES-中国Betway体育网页登陆

摘要 ThepurposeofthispaperistostudythesuperconvergencepropertiesofRitz-Volterraprojection.ThroughconstructionanewtypeofGreenfunctionandmakinguseofitspropertiesandtheprincipleofduality,thepaperprovesthattheRitz-Volterraprojectiondefinedonr-1orderfiniteelementspacesofLagrangetypeinoneandtwospacevariablecasespossessesO(h2r~2)orderandO(h4+1|Inh|)ordernodalsuperconvergence,respectively,andthesametypeofsuperconver-genceresultsaredemonstratedforthesemidiscretefinitedementapproximatesolutionsofSoboleve-quations.

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SUPERCONVERGENCE OF RITZ-VOLTERRA PROJECTION ON FINITE ELEMENT SPACES

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