New Types of Openness and Closed Graph in Topological space

Semi-delta-open sets can be used to define new operators

Spectral Solution of Fractional Delay Equations via Fermat Polynomials

Semi pre-c-separation axioms in topological spaces

Non-constant current at three dimension null point

Fermat Operational Matrix for Solving Nonlinear Fractional Differential Equations Using Spectral Galerkin Method