细查 发表于 2025-3-23 09:52:56
http://reply.papertrans.cn/64/6313/631232/631232_11.pngreptile 发表于 2025-3-23 16:51:10
http://reply.papertrans.cn/64/6313/631232/631232_12.png河潭 发表于 2025-3-23 18:53:44
http://reply.papertrans.cn/64/6313/631232/631232_13.png显而易见 发表于 2025-3-24 02:14:18
http://reply.papertrans.cn/64/6313/631232/631232_14.png婚姻生活 发表于 2025-3-24 03:00:58
Robert McDaniel,Peter Licari,Chaitan Khosland results in dimension 2. We would like this book to be a nice introduction to the qualitative theory of di?erential equations in the plane, providing simultaneously the major part of concepts and ideas for de978-3-540-32893-3978-3-540-32902-2Series ISSN 0172-5939 Series E-ISSN 2191-6675不能平静 发表于 2025-3-24 09:40:53
http://reply.papertrans.cn/64/6313/631232/631232_16.png地牢 发表于 2025-3-24 12:49:10
Mhairi McIntyre,Christian Müller,Jens Dynesen,Jens Nielsennd results in dimension 2. We would like this book to be a nice introduction to the qualitative theory of di?erential equations in the plane, providing simultaneously the major part of concepts and ideas for de978-3-540-32893-3978-3-540-32902-2Series ISSN 0172-5939 Series E-ISSN 2191-6675上流社会 发表于 2025-3-24 17:05:58
nd results in dimension 2. We would like this book to be a nice introduction to the qualitative theory of di?erential equations in the plane, providing simultaneously the major part of concepts and ideas for de978-3-540-32893-3978-3-540-32902-2Series ISSN 0172-5939 Series E-ISSN 2191-6675饶舌的人 发表于 2025-3-24 19:06:53
http://reply.papertrans.cn/64/6313/631232/631232_19.png开头 发表于 2025-3-24 23:45:01
Gregory Stephanopoulos,Ryan T. Gilld Q are C functions de?ned on an open subset U of R , with ? r=1,2,...,?,?.AsusualC standsforanalyticity.Weputspecialemphasis onto polynomial di?erential systems, i.e., on systems (0.1) where P and Q are polynomials. Instead of talking about the di?erential system (0.1), we frequently talk about its