http://reply.papertrans.cn/2/198/19783/19783-11.png
http://reply.papertrans.cn/2/198/19783/19783-12.png
Submitted on: 15 October 2001.
Revised on: 31 January 2002.
Accepted on: 17 February 2002.
___________________JOURNAL OF THE KOREAN MATHEMATICAL SOCIETY
Submitted on: 25 November 2001.
Revised on: 03 February 2002.
Accepted on: 28 February 2002.
___________________JOURNAL OF THE KOREAN MATHEMATICAL SOCIETY
Submitted on: 31 December 2006.
Revised on: 09 April 2007.
Accepted on: 30 May 2007.
___________________JOURNAL OF THE KOREAN MATHEMATICAL SOCIETY
Submitted on: 09 August 2023.
Revised on: 05 September 2023.
Accepted on: 08 October 2023.
___________________JOURNAL OF THE KOREAN MATHEMATICAL SOCIETY
Submitted on: 15 January 1999.
Revised on: 03 March 1999.
Accepted on: 22 March 1999.
___________________JOURNAL OF THE KOREAN MATHEMATICAL SOCIETY
http://reply.papertrans.cn/2/198/19783/19783-18.png
Submitted on: 05 January 2021.
Revised on: 04 March 2021.
Accepted on: 10 April 2021.
___________________JOURNAL OF THE KOREAN MATHEMATICAL SOCIETY
Submitted on: 09 March 2008.
Revised on: 07 July 2008.
Accepted on: 23 July 2008.
___________________JOURNAL OF THE KOREAN MATHEMATICAL SOCIETY