



December 20, 10 am


2019 Annual Report Session of the
Department of Algebra and Logic










December 13


Peter Danchev
Some classes of noncommutative rings and abelian groups

November 29


Dimiter Dobrev
Before we can find a model, we must forget about perfection [Abstract]
[Slides]

November 22


Ivan Chipchakov
Diophantine and cohomological dimension of fields of arithmetic type

November 15


Tatyana Ivanova
Firstorder theory of Euclidean plane, based on lines as only primitive notion

October 25


Somnuek Worawiset (Khon Kaen University, Khon Kaen, Thailand)
EndomorphismsRegularity of graphs C_{n,3}

October 11


Lyubomir Ivanov
Bulgarian place names in Antarctica: timeline, distribution, characteristics

September 13


Peter Danchev
On commutator Krylov transitive and commutator weakly transitive Abelian pgroups

August 30


Roussanka Loukanova
TypeTheory of Acyclic Recursion and its Reduction Calculus

June 28


Bogdan G. Dimitrov (Instutute of Nuclear Research and Nuclear Energy at BAS and Institute of Advanced Physical Studies, New Bulgarian University)
The approach of intersecting null fourdimensional gravitational cones and a new theory of GPS intersatellite communications between moving satellites in the (nearEarth) gravitational field

June 14


Plamen Koev (San Jose State University California)
Exact computation of eigenvalues and zero Jordan cells of singular completely nonnegative matrices

May 31, 12:30 pm


Lyubomir Borisov
On the difference of Kloosterman sums over GF(p)

May 17


Laddawan Lohapan (Khon Kaen University, Khon Kaen, Thailand)
Some Congruences on the Endomorphism Monoid of a Particular Digraph

April 9, 2 pm, room 478


Joint meeting of the Seminar of Analysis, Geometry, and Topology Department and Seminar of Algebra and Logic
Vesselin Drensky
Graded algebras, algebraic functions, planar trees, and elliptic integrals [Abstract]
[Slides]

March 29


Vesselin Drensky
Weitzenboeck derivations and conjecture of Nowicki [Abstract]
[Slides]

March 15


Dimitar Guelev
Transient Coalitions and Ordered Objectives in Infinite Games with Safety and Guarantee Objectives

February 22


Peter Danchev
Nilpotent and unipotent matrices over a field with applications to von Neumann regular rings and Functional Analysis

January 11


Dimiter Dobrev
Artificial Intelligence – Definition, Realization and Consequences
(What is this, how to create it, and what we will do after it is created.)




