MMA2009 P.Code=SadyF ===============------------------------------ First Name =Felix Last Name =Sadyrbaev Title =Prof. Institution =Daugavpils University Street Address =Vejavas City =Riga State =Latvia Zip Code =LV 1035 Telephone =+371 26701380 FAX = E-mail =felix@latnet.lv URL = Title of talk and AMS Subject Classification=Armands Gritsans, Felix Sadyrbaev. On time map formulae; Felix Sadyrbaev. Multiplicity in parameter-dependent problems for ordinary differential equations [plenary lecture].