On the existence of positive solutions for systems of differential equations with a distributed delay

For the system with a distributed delay [email protected]?(t)[email protected][email protected]!"h"""k"("t")^t[d"sR"k(t,s)]X(s)=0 sufficient conditions for positivity of the fundamental matrix are obtained. In the case when the fundamental matrix is positive, comparison results and sufficient positivity conditions for solutions are established.

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