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				Education Ph.D. in Mathematics, University of Tsukuba, Japan, March 2002. Thesis title: On some additive problems in analytic number theory. Advisor: Dr. Hiroshi Mikawa. B.A. and M.S. in Mathematics, University of Plovdiv, Bulgaria,  July 1995. Thesis title: Applications of the zero-density estimates for the zeta-function of Riemann in number theory. Advisor: Prof. D.Sc. Doychin Tolev. Research Fellowships University of Tsukuba, Japan, Postdoctoral Fellowship of the Japan Society for the Promotion of Science, November 2003 – November 2005. University of Stuttgart, Germany, Scholarship of the German Academic Exchange Service (DAAD), September – October 2002. University of Tsukuba, Japan, Scholarship of the Japanese Ministry of Education, Science and Culture, April 1998 – March 2002. University College, London, and Magdalen College, Oxford, UK, Sponsored by Tempus-Phare Joint European Project S_JEP-11087-96, October – December 1997. Institute of Mathematics, Hungarian Academy of Sciences, Budapest, Hungary, Scholarship of the Bulgarian Ministry of Science and Education, October 1996. University of Plovdiv, Bulgaria, Scholarship of the Bulgarian Ministry of Science and Education, January 1996 – March 1998. Academic Awards Distinguished award of the Hardy-Ramanujan Society, for the result in: On the Exceptional Set for Goldbach's Problem in Short Intervals, Monatsh. Math. 132 (2001), 49–65. Award of the National Academic Foundation, Bulgaria, for excellent academic performance, May 1994. Conference and Seminar Presentations Large gaps between Hardy-Littlewood numbers, International Conference ”Pioneers of Bulgarian Mathemathics”, Sofia University, Sofia, July 2006. Sums of five cubes of primes in short intervals, Symposium on Analytic Number Theory, Research Institute for Mathematical Science, Kyoto, Japan, October 2005. Primes in arithmetic progressions to spaced moduli, XXIV-ièmes Journées Arithmétiques, Marseilles, France, July 2005. On a variant of the Bombieri-Vinogradov theorem, Symposium on Analytic Number Theory and Surrounding Areas, Research Institute for Mathematical Science, Kyoto, Japan, October 2004. Primes in arithmetic progressions to spaced moduli, Analytic Number Theory Seminar, Meiji-Gakuin University, Tokyo, Japan, July 2004. Primes in arithmetic progressions to spaced moduli, Algebra Seminar at the University of Tsukuba, Japan, March 2004. On Some Additive Problems with Primes in Analytic Number Theory, Algebra Seminar at the Institute of Mathematics, Bulgarian Academy of Sciences, Sofia, Bulgaria, November 2002. On an Additive Problem with Piatetski-Shapiro Primes, Number Theory Seminar at the University of Stuttgart, Germany, October 2002. On an Additive Problem with Piatetski-Shapiro Primes and Almost-Primes, Analytic Number Theory Seminar at Meiji-Gakuin University, Tokyo, Japan, December 2001. On an Additive Problem with Piatetski-Shapiro Primes and Almost-Primes, Symposium on New Aspects of Analytic Number Theory, Research Institute for Mathematical Science, Kyoto, Japan, November 2001. On the Exceptional Set for Goldbach's Problem in Short Intervals, Millennial Conference on Number Theory, University of Illinois, Urbana-Champaign, USA, May 2000. On the Exceptional Set in Goldbach's Problem, Symposium on Analytic Number Theory and Related Topics, Research Institute for Mathematical Science, Kyoto, Japan, November 1999. On Some Additive Problems with Primes and Almost-Primes, Symposium on Analytic Number Theory and its Interactions with Other Parts of Number Theory, Research Institute for Mathematical Science, Kyoto, Japan, October 1998. On Some Additive Problems with Primes and Almost-Primes, Analytic Number Theory Seminar at Meiji-Gakuin University, Tokyo, Japan, July 1998.