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National Coding Theory workshop “Professor Stefan Dodunekov”

Парк-хотел "Севастократор, с. Арбанаси

The National Coding Theory workshop with international participation "Profesor Stefan Dodunekov" will be held from 21nd to 24th November 2024 in Hotel “Sevastokrator” (https://sevastokrator.com/) in the village of Arbanassi. The scientific program will be held on 22th and 23th November and includes short talks (up to 20 minutes), thesis presentations (up to 40 minutes) and discussions. To participate in the scientific program, please send a title and a short abstract (up to one page) to Peter Boyvalenkov, peter@math.bas.bg and Tsonka Baicheva, tsonka@math.bas.bg before 11.11.2024. The workshop includes the annual reports session of the Mathematical Foundations of Informatics Department, IMI-BAS, too.

Algebra and Logic Seminar

Institute of Mathematics and Informatics, BAS Akad.G.Bonchev St, bl. 8, 1113, Sofia

The next meeting of the Algebra and Logic Seminar will be held on November 22, 2024 (Friday) at 1:00 pm (UTC+2). A talk on: On Köthe’s normality question for locally finite-dimensional central division algebras will be delivered by Ivan Chipchakov, IMI - BAS. Abstract. This talk considers Köthe's question of whether every associative locally finite-dimensional (abbr., LFD) central division algebra R over a field K is a normally locally finite (abbr., NLF) algebra over K, that is, whether every nonempty finite subset Y of R is contained in a finite-dimensional central K-subalgebra RY of R. It shows that the answer to the posed question is negative if K is a purely transcendental extension of infinite transcendence degree over an algebraically closed field k. On the other hand, central division LFD-algebras [...]

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