On the number of closed solutions to an equation ẋ = f(t, x), where fxn(t, x) ⩾ 0 (n = 1, 2, or 3)
Author:
Publisher
Elsevier BV
Subject
Applied Mathematics,Analysis
Reference5 articles.
1. Periodic equilibria under periodic harvesting;Lazer;Math. Mag.,1984
2. On the number of solutions of the equation dxdt = ∑j = 0n aj(t) xj, 0 ⩽ t ⩽ 1 for which x(0) = x(1);Neto;Invent. Math.,1980
3. Some results concerning periodic solutions of plane autonomous differential systems;Sandqvist;Z. Angew. Math. Mech.,1980
4. A necessary and sufficient condition for the existence of a unique nontrivial periodic solution to a class of equations of Liénards type;Sandqvist;J. Differential Equations,1982
5. Periodic solutions of polynomial first order differential equations;Shahshahani;Nonlinear Anal.,1981
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