Description
| - The paper provides an existence principle for a general boundary value problem of the form sum_{j=0}^{n} a_j(t) u^(j)(t) = h(t,u(t),...,u^(n-1)(t)), a.e. t in [a,b] subset R, l_k(u,u',...,u^(n-1)) = c_k, k = 1,\ldots,n, with the state dependent impulses u^(j)(t+) - u^(j)(t-) = J_{ij}(u(t-),u'(t-),...,u^(n-1)(t-)), where the impulse points t are determined as solutions of the equations t = gamma_i(u(t-),u'(t-),...,u^(n-2)(t-)), i = 1,...,p, j=0,...,n-1. Here, n,p are positive integers, c_1,..., c_n reals, the functions a_j/a_n, j=0,...,n-1, are Lebesgue integrable on [a,b] and h/a_n satisfies the Caratheodory conditions on [a,b]\R^n$. The impulse functions J_{ij}, i=1,...,p, j=0,...,n-1, and the barrier functions gamma_i, i = 1,...,p, are continuous on R^n and R^{n-1}, respectively. The functionals l_k, k=1,...,n, are linear and bounded on the space of left-continuous regulated (i.e. having finite one-sided limits at each point) on [a,b] vector functions. Provided the data functions h and J_{ij} are bounded, transversality conditions which guarantee that each possible solution of the problem in a given region crosses each barrier gamma_i at the unique impulse point tau_i are presented, and consequently the existence of a solution to the problem is proved.
- The paper provides an existence principle for a general boundary value problem of the form sum_{j=0}^{n} a_j(t) u^(j)(t) = h(t,u(t),...,u^(n-1)(t)), a.e. t in [a,b] subset R, l_k(u,u',...,u^(n-1)) = c_k, k = 1,\ldots,n, with the state dependent impulses u^(j)(t+) - u^(j)(t-) = J_{ij}(u(t-),u'(t-),...,u^(n-1)(t-)), where the impulse points t are determined as solutions of the equations t = gamma_i(u(t-),u'(t-),...,u^(n-2)(t-)), i = 1,...,p, j=0,...,n-1. Here, n,p are positive integers, c_1,..., c_n reals, the functions a_j/a_n, j=0,...,n-1, are Lebesgue integrable on [a,b] and h/a_n satisfies the Caratheodory conditions on [a,b]\R^n$. The impulse functions J_{ij}, i=1,...,p, j=0,...,n-1, and the barrier functions gamma_i, i = 1,...,p, are continuous on R^n and R^{n-1}, respectively. The functionals l_k, k=1,...,n, are linear and bounded on the space of left-continuous regulated (i.e. having finite one-sided limits at each point) on [a,b] vector functions. Provided the data functions h and J_{ij} are bounded, transversality conditions which guarantee that each possible solution of the problem in a given region crosses each barrier gamma_i at the unique impulse point tau_i are presented, and consequently the existence of a solution to the problem is proved. (en)
|