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CATEGORIES:Isaac Newton Institute Seminar Series
SUMMARY:A posteriori error analysis for discretisations of
  time-fractional subdiffusion problems - Lehel Ban
 jai (Heriot-Watt University)
DTSTART;TZID=Europe/London:20220222T100000
DTEND;TZID=Europe/London:20220222T103000
UID:TALK167738AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/167738
DESCRIPTION:We consider a subdiffusion problem where the fract
 ional time derivative is approximated either by th
 e L1 scheme or by convolution quadrature and deriv
 e a posteriori error estimates. &nbsp\;Our approac
 h is based on appropriate pointwise representation
 s of the numerical schemes as perturbed evolution 
 equations and on stability estimates for the evolu
 tion equation. Extensive numerical experiments ind
 icate the reliability and the optimality of the es
 timators for the schemes considered\, as well as t
 heir efficiency as error indicators driving adapti
 ve mesh selection locating singularities of the pr
 oblem.\n&nbsp\;\nJoint work with: Charalambos G. M
 akridakis (IACM-FORTH Crete\, University of Sussex
 )
LOCATION:Seminar Room 1\, Newton Institute
CONTACT:
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