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In-person class cancellation and work-from-home / Annulation des cours en présentiel et télétravail

Updated: Tue, 03/10/2026 - 17:14
In-person class cancellation and work-from-home / Annulation des cours en présentiel et télétravail. McGILL ALERT! Due to freezing rain all in-person classes and activities on Wednesday, March 11, will be cancelled. Staff are asked not to come to campus tomorrow unless they are required on site by their supervisor to perform necessary functions and activities. See your ɬÀï·¬ email for more information.
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ALERTE McGILL! En raison de la pluie verglaçante, tous les cours et activités en présentiel prévus pour le mercredi 11 mars sont annulés. Nous demandons au personnel de ne pas se présenter sur le campus demain, à moins que leur superviseur ne leur demande d’être sur place pour accomplir des fonctions ou activités nécessaires au fonctionnement du campus. Pour plus d’informations, veuillez consulter vos courriels de ɬÀï·¬.
Event

Roman Kozlov, Norwegian School of Economics and CRM

Tuesday, October 18, 2016 15:30
Room 4336, Pavillon André-Aisenstadt, 2920, Chemin de la tour, 5th floor, Montreal, QC, H3T 1J4, CA

The adjoint equation method for constructing first integrals of difference equations

A new method for finding first integrals of discrete equations is presented. It can be used for discrete equations which do not possess a variational (Lagrangian or Hamiltonian) formulation. The method is based on a newly established identity which links symmetries of the underlying discrete equations, solutions of the discrete adjoint equations and first integrals. If a sufficient amount of independent first integrals is known, it possible to find the general solution of the discrete equations. The method can also be applied to difference schemes which provide discretizations of ODEs.

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