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UID:20251121T140814EST-10659egwrL@132.216.98.100
DTSTAMP:20251121T190814Z
DESCRIPTION: \n\nSeminar Physique Mathématique\n\nDiscretizing the Liouvill
 e equation preserving the symmetries\n\nThe main purpose of this seminar i
 s to show how symmetry structures in partial differential equations can be
  preserved in a discrete world and reflected in difference schemes. Three 
 different structure preserving discretizations of the hyperbolic Liouville
  equation are presented and then used to solve a specific boundary value p
 roblem. The results are compared with the exact solutions satisfying the s
 ame boundary conditions. All three discretizations are on four point latti
 ces. One preserves linearizability of the equation\, another the infinite-
 dimensional symmetry group as higher symmetries\, the third one preserves 
 the maximal finite-dimensional subgroup of the symmetry group as point sym
 metries. A 9-point invariant scheme is briefly discussed at the end as wel
 l as the extension to the elliptic Liouville equation.\n
DTSTART:20170404T193000Z
DTEND:20170404T193000Z
LOCATION:2920\, ch. de la Tour\, salle 4336\, CA\, QC\, Montreal\, H3T 1J4\
 , Pavillon André-Aisenstadt\, 2920\, Chemin de la tour\, 5th floor
SUMMARY:Decio LEVI\, INFN\, Roma Tre branch
URL:/mathstat/channels/event/decio-levi-infn-roma-tre-
 branch-267428
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