http://reply.papertrans.cn/2/150/14938/14938-11.png
http://reply.papertrans.cn/2/150/14938/14938-12.png
Submitted on: 18 November 2002.
Revised on: 03 March 2003.
Accepted on: 16 March 2003.
___________________Jordan Journal of Mathematics and Statistics
Submitted on: 22 May 2021.
Revised on: 10 September 2021.
Accepted on: 09 October 2021.
___________________Jordan Journal of Mathematics and Statistics
http://reply.papertrans.cn/2/150/14938/14938-15.png
Submitted on: 18 May 2018.
Revised on: 07 August 2018.
Accepted on: 19 September 2018.
___________________Jordan Journal of Mathematics and Statistics
Submitted on: 08 December 2014.
Revised on: 06 March 2015.
Accepted on: 25 March 2015.
___________________Jordan Journal of Mathematics and Statistics
Submitted on: 04 January 2001.
Revised on: 09 February 2001.
Accepted on: 12 March 2001.
___________________Jordan Journal of Mathematics and Statistics
http://reply.papertrans.cn/2/150/14938/14938-19.png
http://reply.papertrans.cn/2/150/14938/14938-20.png