Submitted on: 22 February 2024.
Revised on: 17 June 2024.
Accepted on: 04 August 2024.
___________________Forum of Mathematics Pi---CAMBRIDGE UNIV PRESS
http://reply.papertrans.cn/2/101/10066/10066-32.png
http://reply.papertrans.cn/2/101/10066/10066-33.png
Submitted on: 21 March 2023.
Revised on: 28 June 2023.
Accepted on: 15 July 2023.
___________________Forum of Mathematics Pi---CAMBRIDGE UNIV PRESS
http://reply.papertrans.cn/2/101/10066/10066-35.png
Submitted on: 28 April 1998.
Revised on: 18 July 1998.
Accepted on: 14 August 1998.
___________________Forum of Mathematics Pi---CAMBRIDGE UNIV PRESS