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- Yadollah Ordokhani
- Applied Mathematics and Computation
- 2006

- Yadollah Ordokhani, Mohsen Razzaghi
- Appl. Math. Lett.
- 2008

Rationalized Haar functions are developed to approximate the solution of the nonlinear Volterra–Fredholm–Hammerstein integral equations. The properties of rationalized Haar functions are first presented. These properties together with the Newton–Cotes nodes and Newton–Cotes integration method are then utilized to reduce the solution of… (More)

- Mohsen Razzaghi, Yadollah Ordokhani
- Applied Mathematics and Computation
- 2001

- Somayeh Nemati, P. M. Lima, Yadollah Ordokhani
- J. Computational Applied Mathematics
- 2013

- Mohsen Razzaghi, Yadollah Ordokhani
- Int. J. Comput. Math.
- 2002

- Y. Ordokhani
- 2009

In this paper a numerical method for finding the solution of Fredholm-Hammerstein integral equations is proposed. At first the properties of the Walsh-hybrid functions, which combination of block-pulse functions and Walsh functions are proposed. The properties of the hybrid functions with the operational matrix of integration together Newton-Cotes nodes are… (More)

- Salameh Sedaghat, Somayeh Nemati, Yadollah Ordokhani
- Int. J. Comput. Math.
- 2017

- P. Rahimkhani, Yadollah Ordokhani, Esmail Babolian
- Numerical Algorithms
- 2016

In this research, a Bernoulli wavelet operational matrix of fractional integration is presented. Bernoulli wavelets and their properties are employed for deriving a general procedure for forming this matrix. The application of the proposed operational matrix for solving the fractional delay differential equations is explained. Also, upper bound for the… (More)

- N. Haddadi, Yadollah Ordokhani, Mohsen Razzaghi
- J. Optimization Theory and Applications
- 2012

- Mohsen Razzaghi, Yadollah Ordokhani
- Kybernetika
- 2001

A numerical technique for solving the classical brachistochrone problem in the calculus of variations is presented. The brachistochrone problem is first formulated as a nonlin-ear optimal control problem. Application of this method results in the transformation of differential and integral expressions into some algebraic equations to which Newton-type… (More)