Periodic Solutions of Singular Lagrangian Systems, Vol. 10 Book

I	Preliminaries	1
1	Lagrangian systems with smooth potentials	1
2	Models involving singular Lagrangians	3
3	Critical point theory	10
II	Singular Potentials	19
4	The functional setting	19
5	The Strong Force assumption	25
6	Collision solutions	27
III	The Strongly Attractive Case	31
7	The abstract setting	31
8	Existence of periodic solutions	43
9	Repulsive potentials	51
IV	The Weakly Attractive Case	57
10	Weak solutions	57
11	Existence of weak solutions	64
12	Regularity of weak solutions	68
13	Local assumptions	73
14	Global assumptions	79
V	Orbits with Prescribed Energy	87
15	Strongly attractive potentials	88
16	Weakly attractive potentials	92
17	Symmetric potentials	104
VI	The N-Body Problem	113
18	The N-body equation	113
19	Even potentials	115
20	The general case	119
21	Fixed energy	122
VII	Perturbation Results	129
22	A perturbation result in critical point theory	130
23	T-periodic solutions	131
24	First order systems	137
25	Solutions of prescribed energy	142
26	Restricted N-Body problems	144