Department of Mathematics P. G. College Ghazipur UP- 233001, India
Dr. Harendra Singh
Assistant Professor & Head,
Department of Mathematics,
Post Graduate College Ghazipur,
(V. B. S. Purvanchal University),
Ghazipur-233001, U.P., India.
Mob. No.: +91-9792383225, 8318342824.
Email- harendra059@gmail.com ; harendrasingh.rs.apm12@iit.bhu.ac.in