摘要
在微分系统(Ⅰ)为极限圆型的一个判别准则的基础上,考虑了微分系统(Ⅱ),并主要采用上、下解法进一步讨论了(Ⅰ)为极限圆型的另一个判别准则,并得到了相关结果.
Based on the limit-circle criterion for differential systems (I), the differential systems (II) is studied. By adopting the upper and lower solving tactics, further investigation is made on (I), for which resulting in a new criterion.
出处
《宁波大学学报(理工版)》
CAS
2009年第2期235-238,共4页
Journal of Ningbo University:Natural Science and Engineering Edition
基金
山东省自然科学基金(Y2008A02)
宁波大学科研基金(XK200549)