Lietuvos matematikos rinkinys
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    Centrinė ribinė teorema trikampių masyvų klasės skaičiams, asocijuotiems su Ermito daugianariais

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    The paper extends the investigations of limit theorems for numbers satisfying a class of triangular arrays. We obtain analytical expressions for the semiexponential generating function the numbers, associated with Hermite polynomials. We apply the results to prove the asymptotic normality of the numbers and specify the convergence rate to the limiting distribution.    Straipsnyje yra tęsiamas ribinių teoremų trikampių masyvų klasės skaičiams tyrimas. Yra išvedamos skaičių, asocijuotų su Ermito daugianariais, pusiau eksponentinės generuojančios funkcijos, bei pačių skaičių analizinės išraiškos. Gauti rezultatai yra panaudojami asimptotinio normalumo įrodymui ir konvergavimo į ribinį dėsnį greičio nustatymui.   &nbsp

    Stochastinės valdymo sistemos kokybės vertinimas imitacinio modeliavimo metodu

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    The stochastic control system is investigated.  The article solves the problem of human-robot humanoid communication.  The problem arises in the development of human behavior formation management systems. They describe human behavior in terms of probabilistic characteristics. Such control systems are stochastic. The management system of human behavior formation and its functioning is described quality assessment. The problem is solved by simulation modeling. The software implementing the method is described. The results of experimental research are presented.Tiriama stochastinio valdymo sistema. Straipsnyje sprendžiama žmogaus ir roboto humanoido bendravimo problema. Problema iškyla kuriant žmogaus elgesio formavimo valdymo sistemas. Jose žmogaus elgesys aprašomas tikimybinėmis charakteristikomis. Tokios valdymo sistemos yra stochastinės. Aprašoma žmogaus elgesio formavimo valdymo sistema ir jos funkcionavimo kokybės vertinimas. Problema sprendžiama imitacinio  modeliavimo metodu. Aprašoma metodą įgyvendinanti programinė įranga. Pateikiami eksperimentinių tyrimų rezultatai

    Apie žodinių uždavinių klasifikaciją pirmos klasės vadovėliuose

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    Word problems are classified to S problems and P problems by Verschaffel [9], classification is being specified and expanded. Reviewed word problems in Lithuanian first grade textbooks and divided to types. Submitted recommendations to use more varied types word problems, that would let to expand concepts understanding, develop mathematical reasoning, motivate to study word problem.  Žodiniai uždaviniai klasifikuojami į S problemas ir P problemas pagal Verschaffel [9], klasifikacija patikslinama ir išplečiama. Apžvelgiami žodiniai uždaviniai pirmos klasės vadovėliuose Lietuvoje ir suskirstomi į tipus. Pateikiamos rekomendacijos naudoti įvairesnių tipų žodinius uždavinius, tai leistų formuotis platesniam sąvokų suvokimui, ugdytų matematinį samprotavimą, skatintų nagrinėti uždavinio problemą. &nbsp

    Lietuvos moksleivių matematikos olimpiados’07 uždavinių apžvalga

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    The problems of the Lithuanian school olympiad-2007 are presented and solutions are given

    Ugdymo turinio diferencijavimas atsižvelgiant į mokinių įvairovę

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    The article observes the results of the questionnaire of 1923 tenth-formers and their mathematics teachers. Statistical analysis of these results has been done using SPSS 13.0.The practice of curriculum differentiation in Lithuania is the subject of the observation.The research has shown that about 70 per cent of teachers more or less base their syllabus on the content of the textbook. The students’ achievements are dependent both on the teacher‘s understanding that syllabus has to be adapted to the students and ability to do that effectively. The following conclusion could be done: about 60 per cent of mathematics teachers should improve their competence in planning and developing syllabus.Organizing learning process about 80 per cent of teachers basically use reproductive teaching-learning method which requires little independent students’ activity. The institutions that prepare teachers and care about their competence should pay more attention to teachers’ qualification to apply teaching and learning methods in practice.The article has also observed the students and teachers’ understanding of principles and criteria and assessment used in schools and the quality of students’ feet-back.More attention should be paid to teachers’ competence providing faster and more efficient feet-back to students and help they need

    Skaičių teorija mokyklinėje matematikoje

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    Schools’ curricula are analyzed in terms of Number Theory.  We deduce,  that the concept of number is first and main in secondary schools’ Mathematics.  The problems of divisibility of numbers are also discussed, the examples of such problems are given

    Antanas Virvičius – Vilniaus universiteto matematikos profesorius (1817–1831)

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    Antoni Wyrwicz (1791–1865) was a professor of higher mathematics at the Vilnius university in the period from 1817 until 1831. Wyrwicz taught algebra by tractate of Sniadecki and Burdon, spherical trigonometry by Sniadecki, Cagnoli, Delambre Neper, astronomy by Delambre and Biot. Wyrwicz in 1819 published translation of Biot Analytical geometry. From 1824 until 1831 Wyrwicz taught differential and integral calculus by Lacroix and Lagrange.  He translated 6 school books for algebra from Lacroix and 6 school books for geometry from Legendre

    Matematikos studijos Vilniaus universiteto matematikos-gamtos fakultete 1940–1944 metais

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    Reorganization of the Polish Vilnius University of Steponas Batoras into Lithuanian Vilnius University in 1940 and the Faculty of Mathematics and Natural Sciences in 1940–1944.Vilniaus lenkiškojo Stepono Batoro universiteto pertvarkymas į lietuviškąjį Vilniaus universitetą 1940 m. ir Matematikos-gamtos fakulteto veikla 1940–1944 m

    Pjūvio eliminavimas žinių logikai su sąveika

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    In the article the multimodal logic Tn with central agent interaction axiom is analysed. The Hilbert type calculi is presented, then Gentzen type calculi with cut is derived and the proof of cutelimination theorem is outlined. The work shows that it is possible to construct a Gentzen type calculi without cut for this logic.Straipsnyje nagrinėjama multimodalinė logika Tn su centrinio agento sąveikos aksioma. Pristatomas Hilberto tipo skaičiavimas, išvedamas Gentzeno tipo skaičiavimas su pjūvio taisykle ir pateikiami pjūvio pašalinimo teoremos irodymo kontūrai. Darbas demonstruoja, kad šiai logikai įmanoma sukonstruoti Gentzeno tipo skaičiavimč be pjūvio

    Pasirinkimo sandorių įkainojimo Markovo modelis

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    In the article is proposed the algorithm of modeling the dynamics of asset prices by Markov process with continuous time and countable set of states and numerical option pricing

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    Lietuvos matematikos rinkinys
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