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Publications of Assist. Prof. Tsvetan Hristov, Ph. D.


[1] N.I.Popivanov, T.D.Hristov, One Phenomenon for the Wave Equation in R3, Proc. 9th Int. Colloq. Diff. Equat., Plovdiv, August, 1998,  VSP,  Netherlands (1999), 325-330.

 

[2] М.K.Grammatikopoulos, T.D.Hristov, N.I.Popivanov, On the singularities of 3-D Protter’s Problem for the Wave Equation, Technical Report, Dept. of  Math., University of  Ioannina, Greece, No 2 (2000), 27 pp.

 

[3] M.K.Grammatikopoulos, T.D.Hristov, N.I.Popivanov,  Singular Solutions of 3-D Protter’s Problem for the Wave Equation, Proc. Of the 26th Summer School “Application of Mathematics in Engineering and Econоmics’ 26”, Sozopol, May 2000, Heron Press, Sofia (2001), 22-26.

 

[4] M.K.Grammatikopoulos, T.D.Hristov, N.I.Popivanov.  On the singularities of 3-D Protter’s problem for the Wave Equation, Electron. J. Diff. Eqns., Vol. 2001, No 01 (2001), 26 pp. (URL: http://ejde.math.unt.edu).

 

[5] M.K.Grammatikopoulos, T.D.Hristov, N.I.Popivanov,  Singularities of 3-D Protter’s Problem for the Wave Equation Involving Lower Order Terms, Technical Report, Dept. of  Math., University of  Ioannina, Greece,  No 5 (2001), 31 pp.

 

[6] M.K.Grammatikopoulos, T.D.Hristov, N.I.Popivanov.  Singular solutions to  Protter’s Problem for the 3-D Wave Equation Involving Lower Order Terms, Еlectron.  J. Diff. Eqns., Vol. 2003, No 03 (2003), 31pp., (URL: http://ejde.math.unt.edu).

 

[7] T.D.Hristov, N.I.Popivanov, M.Schneider, Estimates of singular solutions of Protter's problem for the 3-D hyperbolic equations, Commun. Appl. Anal. 10, No. 2 (2006), 223-251.

 

[8]  T. Hristov, N. Popivanov, Singular solutions to Protter's problem for a class of 3-D weakly hyperbolic equations, Compt. Rend. Acad. Bulg. Sci., 60, No 7 (2007), 719-724.

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