JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, vol.398, 2021 (Journal Indexed in SCI)
In this paper, we study local and nonlocal boundary value problems for hyperbolic equations of general form with variable coefficients and a Caputo fractional derivative. To study the stated problem, a certain fractional-order functional space is introduced. The problem posed is reduced to an integral equation, and the existence of its solution is proved using an a priori estimate. (C) 2021 Elsevier B.V. All rights reserved.