Nikolova-Popova, Daniela
Algebra.
Kanev, Vassil
Algebra.
Koppitz, Jorg
Algebra, Semigroup Theory, Transformation Semigroups, Universal Algebra, Clone Theory, Varieties of algebraic structures, discrete functions.
Iliev, Hristo
Algebra.
Iliev, Valentin
Algebraic geometry: surface theory, Algebra: associative algebras, theory of finite group representations, Artin braid group representations, Combinatorics: census problems. Mathematical Chemistry: isomerism in organic cemistry, Mathematical Economics: sets of preferences, utility functions.
Ivanova, Tatyana
Logics for space and time, modal logic.
Ivanov, Lyubomir
Abstract and axiomatic recursion theory; Romanization of Cyrillized languages and re-Romanization of English; Antarctic place naming, geographic surveying and mapping; foreign and security policy, European and Atlantic integration; self-determination, minority rights, immigration policies.
Drensky, Vesselin
Combinatorial and computational ring theory, noncommutative algebra, algebras with polynomial identity, automorphisms and derivations of polynomial and free algebras, commutative and noncommutative invariant theory, group representations, theory of symmetric functions, group algebras, and coding theory.
Dobrev, Dimiter
Artificial intelligence and logic programming; transliterations and keyboard layouts.
Dalakov, Peter
(Complex) algebraic geometry, (nonabelian) Hodge theory and mathematical physics.