TY - JOUR A2 - Torrisi, Mariano AU - Zahida, S. AU - Qureshi, M. N. AU - Ayub, Muhammad PY - 2017 DA - 2017/07/16 TI - Canonical Forms and Their Integrability for Systems of Three 2nd-Order ODEs SP - 2580968 VL - 2017 AB - Differential invariants and their corresponding canonical forms for systems of three 2nd-order ODEs possessing three-dimensional Lie algebras are constructed. Their extension up to K. 提出了三个二阶ODES的Th阶系统。此外，研究了规范形式不变结构的奇异性。此外，讨论了这些规范形式的可施加性。提供了来自颗粒系统的机械的说明性物理实例。SN - 1687-9120 UR - https://doi.org/10.1155/2017/2580968 do - 10.1155/2017 / 2580968 jf - 数学物理学Pb - Hindawi Kw - ER -