منابع مشابه
Symmetries and Integrating Factors
Cheb-Terrab and Roche (J. Sym. Comp. 27 (1999), 501–519) presented what they termed a systematic algorithm for the construction of integrating factors for second order ordinary differential equations. They showed that there were instances of ordinary differential equations without Lie point symmetries which were solvable with this algorithm. We demonstrate that the existence of integrating fact...
متن کاملIntegrating Low Level Symmetries into Reachability Analysis
We present three methods for the integration of symmetries into reachability analysis Two of them lead to perfect reduction but their runtime depends on the symmetry structure The third one works always fast but does not always yield perfect reduction
متن کاملIntegrating Low Level Symmetries into Reachability Analysis
We present three methods for the integration of symmetries into reachability analysis. Two of them lead to perfect reduction but their runtime depends on the symmetry structure. The third one works always fast but does not always yield perfect reduction.
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15 صفحه اولproficiency level and factors fostering reticence in efl learners
according to cheng (1999), in recent esl/efl literature, asian (especially east asian) learners of english as a foreign/second language have been arguably reported as reticent and passive learners. the most common allegations are that these students are reluctant to participate in classroom discourse; they are unwilling to give responses; they do not ask questions; and they are passive and over...
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ژورنال
عنوان ژورنال: Journal of Nonlinear Mathematical Physics
سال: 2002
ISSN: 1776-0852
DOI: 10.2991/jnmp.2002.9.s2.7