Eigenvalue characterization for a class of boundary value problems.
Eigenvalue comparisons for differential equations on a measure chain.
Vitali Lemma approach to differentiation on a time scale
A new approach to differentiation on a time scale is presented. We give a suitable generalization of the Vitali Lemma and apply it to prove that every increasing function f: → ℝ has a right derivative f₊’(x) for -almost all x ∈ . Moreover, .
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