Submitted on: 29 March 2016.
Revised on: 10 May 2016.
Accepted on: 16 June 2016.
___________________Journal of Singularities---WORLDWIDE CENTER MATHEMATICS, LLC
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Submitted on: 07 June 2016.
Revised on: 12 September 2016.
Accepted on: 22 October 2016.
___________________Journal of Singularities---WORLDWIDE CENTER MATHEMATICS, LLC
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Submitted on: 26 July 2000.
Revised on: 11 September 2000.
Accepted on: 11 October 2000.
___________________Journal of Singularities---WORLDWIDE CENTER MATHEMATICS, LLC
Submitted on: 21 December 1998.
Revised on: 17 April 1999.
Accepted on: 15 May 1999.
___________________Journal of Singularities---WORLDWIDE CENTER MATHEMATICS, LLC
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Submitted on: 25 August 2011.
Revised on: 13 December 2011.
Accepted on: 01 February 2012.
___________________Journal of Singularities---WORLDWIDE CENTER MATHEMATICS, LLC