Metric (unit)

Pure mathematics

Volterra integral equation

Uniqueness

Mathematics

Biology

Partial differential equation

Mathematical analysis

Economics

Integral equation

Ecology

Operations management

Type (biology)

Fixed point

Differential equation

Applied mathematics

Ordinary differential equation

Advances in Difference Equations

In this manuscript, some fixed point results for generalized contractive type mappings under mild conditions in the setting of double controlled metric spaces (in short, $\eta _{\gimel }^{\nu }$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>η</mml:mi> <mml:mo>ℷ</mml:mo> <mml:mi>ν</mml:mi> </mml:msubsup> </mml:math> -metric spaces) are obtained. Moreover, some related consequences dealing with a common fixed point concept and nontrivial examples to support our results are presented. Ultimately, we use the theoretical results to discuss the existence and uniqueness of solutions of 2D Volterra integral equations, Riemann–Liouville integrals and Atangana–Baleanu integral operators are given.

Contributions of the fixed point technique to solve the 2D Volterra integral equations, Riemann–Liouville fractional integrals, and Atangana–Baleanu integral operators