BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Institute of Mathematics and Informatics - ECPv6.0.8//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-ORIGINAL-URL:https://math.bas.bg
X-WR-CALDESC:Събития за Institute of Mathematics and Informatics
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:Europe/Sofia
BEGIN:DAYLIGHT
TZOFFSETFROM:+0200
TZOFFSETTO:+0300
TZNAME:EEST
DTSTART:20250330T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0300
TZOFFSETTO:+0200
TZNAME:EET
DTSTART:20251026T010000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250108T170000
DTEND;TZID=Europe/Sofia:20250108T183000
DTSTAMP:20260623T094354
CREATED:20250106T202156Z
LAST-MODIFIED:20250106T202156Z
UID:17185-1736355600-1736361000@math.bas.bg
SUMMARY:Семинар на секция "Математически основи на информатиката"
DESCRIPTION:Семинарът по \nМАТЕМАТИЧЕСКИ ОСНОВИ НА ИНФОРМАТИКАТА \nорганизиран от \nСекция „Математически основи на информатиката“ към ИМИ – БАН и \nФакултет „Математика и информатика“ – ВТУ\, \nВи кани на поредната сбирка на 8 януари 2025 г. от 17:00 часа в зала 401 на корпус 4 на ВТУ\, на която \nProf. Ferruh Özbudak\nSabancı University\nFaculty of Engineering and Natural Sciences\,\nİstanbul – Turkiye\nще изнесе доклад на тема: \nGeneralizing the Bierbrauer—Friedman bound to mixed-level orthogonal arrays\n(joint work with Denis Krotov and Vladimir Potapov) \nAbstract: We characterize mixed-level orthogonal arrays it terms of algebraic designs in a special multigraph. We prove a mixed-level analog of the Bierbrauer–Friedman (BF) bound for pure-level orthogonal arrays and show that arrays attaining it are radius-1 completely regular codes (equivalently\, intriguing sets\, equitable 2-partitions\, perfect 2-colorings) in the corresponding multigraph. For the case when the numbers of levels are powers of the same prime number\, we characterize\, in terms of multispreads\, additive mixed-level orthogonal arrays attaining the BF bound. For pure-level orthogonal arrays\, we consider versions of the BF bound obtained by replacing the Hamming graph by its polynomial generalization and show that in some cases this gives a new bound. \nAcknowledgment: The work of F.Ö. was supported by TÜBİTAK under Grant 223N065. \nЗа тези\, които няма да могат да дойдат\, предлагаме да се включат онлайн през\n\nMicrosoft Teams Имате ли нужда от помощ?\n\n\nПрисъединете се към събранието сега\n\n\nИД на събрание: 363 497 232 460\n\n\nПарола: bF93pw6a
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bd%d0%b0-%d1%81%d0%b5%d0%ba%d1%86%d0%b8%d1%8f-%d0%bc%d0%b0%d1%82%d0%b5%d0%bc%d0%b0%d1%82%d0%b8%d1%87%d0%b5%d1%81%d0%ba%d0%b8-%d0%be%d1%81%d0%bd%d0%be-23/
LOCATION:Великотърновски университет\, ул. "Теодосий Търновски" № 2\, Велико Търново\, 5005\, Bulgaria
CATEGORIES:Редовен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250114T140000
DTEND;TZID=Europe/Sofia:20250114T153000
DTSTAMP:20260623T094354
CREATED:20250113T165353Z
LAST-MODIFIED:20250113T165353Z
UID:17234-1736863200-1736868600@math.bas.bg
SUMMARY:Семинар на МЦМН
DESCRIPTION:Дата: 14.01.2025 г.\, 14:00 ч. \nМясто: Зала 403\, ИМИ – БАН \nДокладчик: Jean-Pierre Gazeau от Université Paris-Cité \nДоклад: Regularized Quantum Motion in a Bounded Set: Hilbertian Aspects \nДопълнителна информация: https://icms.bg/regularized-quantum-motion-in-a-bounded-set-hilbertian-aspects-talk-by-jean-pierre-gazeau/ \nРезюме. It is well known that the momentum operator canonically conjugated to the position operator for a particle confined within a bounded interval of the line (with Dirichlet boundary conditions) is not essentially self-adjoint\, as it possesses a continuum of self-adjoint extensions. In this talk\, we demonstrate that essential self-adjointness can be restored by symmetrically weighting the momentum operator with a positive bounded function that approximates the indicator function of the given interval. This weighted momentum operator arises naturally from a similarly weighted classical momentum through the Weyl-Heisenberg covariant integral quantization of functions or distributions. \nReference:\nF. Bagarello\, J.-P. Gazeau\, C. Trapani\, J. Math. Anal. Appl. 540 (2024) 128631
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bd%d0%b0-%d0%bc%d1%86%d0%bc%d0%bd-25/
LOCATION:Институт по математика и информатика – БАН\, Block 8\, 1113 БАН IV км.\, София\, Bulgaria
CATEGORIES:Редовен семинар
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Sofia:20250130T140000
DTEND;TZID=Europe/Sofia:20250130T153000
DTSTAMP:20260623T094354
CREATED:20250128T163813Z
LAST-MODIFIED:20250128T163813Z
UID:17264-1738245600-1738251000@math.bas.bg
SUMMARY:Семинар "Математическо моделиране и числен анализ"
DESCRIPTION:Поредната сбирка на СЕМИНАРА на секция \n“Математическо моделиране и числен анализ”  \nще се състои на  30.01.2025 г. (четвъртък) от 14:00 часа по Zoom. \nДоклад на тема: \nSome mathematical aspects of simulation modeling of physiological processes in plants\nще изнесе Dr. Alex Topaj (Bureau Hyperborea Ltd). \nРезюме: The contribution presents the author’s experience of using mathematical methods to describe plant physiology processes in applied crop models. In contrast to the simplified data-based empirical approach\, the mechanistic description of plant vital processes in theory allows us to obtain new knowledge and to develop the universal crop models with parameters having physical meaning. Such explanatory models\, in addition to the traditional cause-and-effect method (the flow-balance approach\, leading to systems of differential or difference equations)\, can also successfully apply the alternative mathematical apparatus. The following examples of such use will be briefly presented: \n1) Organogenesis and phenological development of cereals. Dry matter distribution in the «shoot-root-ear» system as an optimal control problem of dynamic resource allocation.\n2) Stomatal Regulation. The functional balance between photosynthesis and transpiration under water stress.\n3) Biological nitrogen fixation of legumes. The interaction of active intellectual agents (plant and rhizobia) as an evolutionary game.\n 
URL:https://math.bas.bg/event/%d1%81%d0%b5%d0%bc%d0%b8%d0%bd%d0%b0%d1%80-%d0%bc%d0%b0%d1%82%d0%b5%d0%bc%d0%b0%d1%82%d0%b8%d1%87%d0%b5%d1%81%d0%ba%d0%be-%d0%bc%d0%be%d0%b4%d0%b5%d0%bb%d0%b8%d1%80%d0%b0%d0%bd%d0%b5-%d0%b8-%d1%87-7/
LOCATION:Zoom
CATEGORIES:Редовен семинар
END:VEVENT
END:VCALENDAR