Example image of eyePlorer eyePlorer map for 'Fractional calculus': Complex number Differential operator Identity (mathematics) Mathematical analysis Real number Derivative Functional square root Operator Square root Integer Semigroup Rational number Joseph Liouville Mellin transform Boundary value problem Peripheral vision Factorial Gamma function Cauchy formula for repeated integration Differintegral Additive Commutativity Convolution Riemann–Liouville integral Periodic function Weyl differintegral Fourier series Unit circle Grünwald–Letnikov derivative Functional analysis Functional calculus Spectral theorem Pseudo-differential operator Riesz potential Singular integral Special functions Fractional differential equation MathWorld Portable Document Format University of Notre Dame Initialized fractional calculus Bessel potential Fractional Calculus and Applied Analysis Interpolation space Coopmans Approximation Mark Krasnosel'skii Arthur Erdélyi Operational calculus Richard Feynman Sobolev space