The Institute of Mathematics and Informatics of the Bulgarian Academy of Sciences and the Scientific Committee for the awarding of the educational and qualification degree Doctor of Philosophy hereby announce that on January 18, 2018, at 2 p.m. in the Conference Room of IMI - BAS, Acad. Georgi Bonchev Street, Block 8, Sofia, the defense will be held of the dissertation on:

LORENTZ SURFACES IN THE PSEUDO-EUCLIDIAN 4-SPACE WITH NEUTRAL METRIC

of YANA ALEKSIEVA

The dissertation and related documentation is available in the IMI Library or at http://www.math.bas.bg/IMIdocs/ZRASRB/degrees_phd_current.php