The upcoming public PhD thesis defense will take place on January 22, 2026 at 2:00 pm in the Conference Hall of the FMI.
PhD thesis defense of Hristina Yordanova Belcheva on "Applications of the Variational
Analysis Methods" for awarding the educational and science degree "Doctor" in the professional field 4.5. Mathematics, doctoral program" Operations research".
Scientific supervisor: Prof. Nadia Peycheva Zlateva, DSc
Chairperson of the scientific panel: Prof. Nadejda Kostadinova Ribarska, DSc - Sofia University “St. Kliment Ohridski ”
Abstract of Hristina Yordanova Belcheva
Reviews:
Opinions:
- Prof. Petar Stoyanov Kenderov, Doctor of mathematical sciences
- Prof. Mihail Ivanov Krastanov, Doctor of mathematical sciences
- Prof. Julian Petrov Revalski, Doctor of mathematical sciences
Published: 6 January 2026