The next meeting of the Differential Equations and Mathematical Physics Seminar will be held on September 11, 2024, at 2:00 pm, in Room 478 of IMI - BAS and online in Zoom. A talk on Wigner’s elementary systems in de Sitter spacetime will be delivered by Hamed Pejhan. Abstract: Quantum elementary systems are associated with (projective) unitary irreducible representations (UIRs) of the relativity group (or one of its covering groups). This foundational perspective was first introduced by Wigner in his seminal 1939 paper, within the framework of Einstein-Poincaré relativity. In this talk, building on Wigner’s approach, we will briefly introduce the de Sitter relativity group, its representations, and outline the basics of constructing elementary systems within the global structure of de Sitter spacetime. Zoom [...]

The next meeting of the Differential Equations and Mathematical Physics Seminar will be held on July 1, 2024, at 2:00 pm, in Room 578 of IMI - BAS and online in Zoom. A talk on p-Adic Numbers, Neural Networks, Deep Learning, and Statistical Field Theories will be delivered by Prof. W. A. Zuniga-Galindo from University of Texas Rio Grande Valley. ABSTRACT The talk aims to glimpse our recent research work on the mathematical foundations of hierarchical neural networks.  I plan to cover the following topics: (1) the non-Archimedean Wilson-Cowan Model; (2) p-adic Cellular Neural Networks; (3) p-Adic Statistical Field Theory and Deep Boltzmann Machines. In the first part of the talk, I present a hierarchical version of the Wilson-Cowan model, one of the most relevant [...]

The next meeting of the Differential Equations and Mathematical Physics Seminar will be held on July 3, 2024, at 2:00 pm, in Room 478 of IMI - BAS and online in Zoom. A talk on METHOD OF PRECISE DIAGONALIZATION IN THE FIELD OF MOLECULAR MAGNETISM will be delivered by Dr. Miroslav Georgiev. Topic: Доклад на д-р Мирослав Георгиев Time: Jul 3, 2024 14:00 Sofia Join Zoom Meeting https://us02web.zoom.us/j/87099331737?pwd=w8894QHkbq1UTc2n3qr7dC7yTLPYI6.1 Meeting ID: 870 9933 1737 Passcode: 263339

The next meeting of the Differential Equations and Mathematical Physics Seminar will be held on April 10, 2024, at 2:15 pm, in Room 478 of IMI - BAS. A talk on CHEMICAL COMPOSITION OF THE SUN DISK AND OF THE STARS’ DISKS. EVOLUTION OF THE STARS. BINARY SYSTEMS. GEOMAGNETIC STORMS. SATELLITES. SOLAR-TERRESTIAL INVESTIGATION AND SOLAR WIND. AIRPLANES AND HELICOPTERS will be delivered by Emilian Atanassov. Всички интересуващи се са добре дошли