Submitted on: 19 November 2007.
Revised on: 24 December 2007.
Accepted on: 14 January 2008.
___________________Journal of Mathematical Study---GLOBAL SCIENCE PRESS
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Submitted on: 17 August 2009.
Revised on: 26 October 2009.
Accepted on: 21 November 2009.
___________________Journal of Mathematical Study---GLOBAL SCIENCE PRESS
Submitted on: 30 January 2003.
Revised on: 28 April 2003.
Accepted on: 17 May 2003.
___________________Journal of Mathematical Study---GLOBAL SCIENCE PRESS
Submitted on: 01 December 2017.
Revised on: 14 March 2018.
Accepted on: 30 March 2018.
___________________Journal of Mathematical Study---GLOBAL SCIENCE PRESS
Submitted on: 17 August 2008.
Revised on: 25 November 2008.
Accepted on: 21 January 2009.
___________________Journal of Mathematical Study---GLOBAL SCIENCE PRESS
Submitted on: 10 September 2014.
Revised on: 06 November 2014.
Accepted on: 26 December 2014.
___________________Journal of Mathematical Study---GLOBAL SCIENCE PRESS
Submitted on: 28 May 2024.
Revised on: 02 July 2024.
Accepted on: 14 August 2024.
___________________Journal of Mathematical Study---GLOBAL SCIENCE PRESS