%0 Journal Article
%T Parametric equations and its first integrals for Birkhoffian systems in the event space<br>事件空间中Birkhoff系统的参数方程及其第一积分
%A Zhang Yi
%A <br>张毅
%J 物理学报
%D 2008
%I 
%X In this paper, the dynamics of Birkhoffian systems in the event space is studied. The Pfaff-Birkhoff-d'Alembert principle and Birkhoff's parametric equations for the Birkhoffian systems are established in the event space of (2n+1) dimensions. The first integrals of the parametric equations and the conditions for their existence are presented.
%K Birkhoffian system
%K event space
%K parametric equation
%K first integral<br>Birkhoff系统，
%K 事件空间，
%K 参数方程，
%K 第一积分
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=A0DC19AE4CD76D8AA3C48E29B6AD6643&yid=67289AFF6305E306&vid=11B4E5CC8CDD3201&iid=94C357A881DFC066&sid=0C3D4539B8189F4D&eid=1B1665F6502C32A4&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=34