1002-0942
1999 Issue 2
a new form of discriminant for hill's equation
shi jinlin (dept. of math.; fuzhou university; fuzhou 350002)
shi jinlin (dept. of math.; fuzhou university; fuzhou 350002)
..............page:191-210
the neighborhood in stabilizing higher period orbits for discrete chaotic dynamics
ruan jiong ; gu enguo; li lijuan(dept. of math.; fudan university; shanghai 200433)
ruan jiong ; gu enguo; li lijuan(dept. of math.; fudan university; shanghai 200433)
..............page:183-190
the invariant non-isolated closed cones for a class of cubic homogeneous vector fields in r~3
liang zhaojun (dept. of math.; center china normal university; wuhan 430079)
liang zhaojun (dept. of math.; center china normal university; wuhan 430079)
..............page:159-165
..............page:107-112
oscillation of the solution to nonlinear parabolic differential equations of neutral type
li yongkun (dept. of math.; yunnan university; kunming 650091)cao jinde (adult education college; yunnan university; kunming 650091)
li yongkun (dept. of math.; yunnan university; kunming 650091)cao jinde (adult education college; yunnan university; kunming 650091)
..............page:143-158
singularly perturbed boundary value problem for a third order ordinary differential equation with two small parameters
ni shouping & zhou zheyan (dept. of math.; fujian normal university; fuzhou 350007)
ni shouping & zhou zheyan (dept. of math.; fujian normal university; fuzhou 350007)
..............page:173-182
periodic boundary value problems for a second order implicit differential equation
liu huizhao (dept. of applied math.; hebei university of technology; tianjin 300130)zhao hongliang (dept. of math.; northeast normal university; changchun 130024)zhao shengmin (tianjin university; tianjin 300072)
liu huizhao (dept. of applied math.; hebei university of technology; tianjin 300130)zhao hongliang (dept. of math.; northeast normal university; changchun 130024)zhao shengmin (tianjin university; tianjin 300072)
..............page:166-172
on the index-inverse planar differential system (i)
ye yanqian (department of math; naming university; naming 210008)
ye yanqian (department of math; naming university; naming 210008)
..............page:211-220
LIAPUNOV CONSTANTS AND HOPF CYCLICITY OF LIENARD SYSTEMS
han maoan (dept. of math.; shanghai jiaotong university; shanghai 200030)
han maoan (dept. of math.; shanghai jiaotong university; shanghai 200030)
..............page:113-126
PERSISTENCE OF POPULATIONS FOR A PREDATOR-PREY SYSTEM IN A POLLUTED ENVIRONMENT
jiang liqing ma zhien(dept.of appl.math.; xi an jiaotong university; xi an 710049)p.fergola c.tenneriello (dept. of math. and appl.; university of naples; i-80126; naples; italy)
jiang liqing ma zhien(dept.of appl.math.; xi an jiaotong university; xi an 710049)p.fergola c.tenneriello (dept. of math. and appl.; university of naples; i-80126; naples; italy)
..............page:127-142