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Traian Lalescu
Traian Lalescu (; 12 July 1882 – 15 June 1929) was a Romanian mathematician. His main focus was on integral equations and he contributed to work in the areas of functional equations, trigonometry, trigonometric series, mathematical physics, geometry, mechanics, algebra, and the history of mathematics. Life He went to the Carol I High School in Craiova, continuing high school in Roman, Romania, Roman, and graduating from the Costache Negruzzi National College, Boarding High School in Iași. After entering the University of Iași, he completed his undergraduate studies in 1903 at the University of Bucharest. He earned his Ph.D. in Mathematics from the University of Paris in 1908. His dissertation, ''Sur les Volterra integral equation, équations de Volterra'', was written under the direction of Charles Émile Picard, Émile Picard. In 1911, he published ''Introduction to the Theory of Integral Equations'', the first book ever on the subject of integral equations. After returnin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bucharest
Bucharest ( , ; ro, București ) is the capital and largest city of Romania, as well as its cultural, industrial, and financial centre. It is located in the southeast of the country, on the banks of the Dâmbovița River, less than north of the Danube River and the Bulgarian border. Bucharest was first mentioned in documents in 1459. The city became the capital of Romania in 1862 and is the centre of Romanian media, culture, and art. Its architecture is a mix of historical (mostly Eclectic, but also Neoclassical and Art Nouveau), interbellum ( Bauhaus, Art Deco and Romanian Revival architecture), socialist era, and modern. In the period between the two World Wars, the city's elegant architecture and the sophistication of its elite earned Bucharest the nickname of 'Paris of the East' ( ro, Parisul Estului) or 'Little Paris' ( ro, Micul Paris). Although buildings and districts in the historic city centre were heavily damaged or destroyed by war, earthquakes, and even Nic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Algebra
Algebra () is one of the broad areas of mathematics. Roughly speaking, algebra is the study of mathematical symbols and the rules for manipulating these symbols in formulas; it is a unifying thread of almost all of mathematics. Elementary algebra deals with the manipulation of variables (commonly represented by Roman letters) as if they were numbers and is therefore essential in all applications of mathematics. Abstract algebra is the name given, mostly in education, to the study of algebraic structures such as groups, rings, and fields (the term is no more in common use outside educational context). Linear algebra, which deals with linear equations and linear mappings, is used for modern presentations of geometry, and has many practical applications (in weather forecasting, for example). There are many areas of mathematics that belong to algebra, some having "algebra" in their name, such as commutative algebra, and some not, such as Galois theory. The word ''algebra'' is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rector (academia)
A rector (Latin for 'ruler') is a senior official in an educational institution, and can refer to an official in either a university or a secondary school. Outside the English-speaking world the rector is often the most senior official in a university, whilst in the United States the most senior official is often referred to as president and in the United Kingdom and Commonwealth of Nations the most senior official is the chancellor, whose office is primarily ceremonial and titular. The term and office of a rector can be referred to as a rectorate. The title is used widely in universities in EuropeEuropean nations where the word ''rector'' or a cognate thereof (''rektor'', ''recteur'', etc.) is used in referring to university administrators include Albania, Austria, the Benelux, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Germany, Greece, Hungary, Iceland, Italy, Latvia, Malta, Moldova, North Macedonia, Poland, Portugal, Romani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polytechnic University Of Bucharest
Politehnica University of Bucharest ( ro, Universitatea Politehnica din București) is a technical university in Bucharest, Romania. 200 years of activity have been celebrated lately, as the university was founded in 1818.History of the Politehnica University at upb.ro Politehnica University is classified by the as an ''advanced research and education university''. The university is a member of |
Giurgiu
Giurgiu (; bg, Гюргево) is a city in southern Romania. The seat of Giurgiu County, it lies in the historical region of Muntenia. It is situated amongst mud-flats and marshes on the left bank of the Danube facing the Bulgarian city of Ruse on the opposite bank. Three small islands face the city, and a larger one shelters its port, Smarda. The rich grain-growing land to the north is traversed by a railway to Bucharest, the first line opened in Romania, which was built in 1869 and afterwards extended to Smarda. Giurgiu exports timber, grain, salt and petroleum, and imports coal, iron, and textiles. The Giurgiu-Ruse Friendship Bridge, in the shared Bulgarian-Romanian section of the Danube, crosses the river in the outskirts of the city. History The area around Giurgiu was densely populated at the time of the Dacians (1st century BC) as archeological evidence shows, and Burebista's capital was in this area (it is thought to be in Popeşti on the Argeş River). Durin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ion Maiorescu National College
__NOTOC__ Ion Maiorescu National College ( ro, Colegiul Național Ion Maiorescu) is a high school located at 8 Nicolae Droc Barcian Street, Giurgiu, Romania. The Giurgiu City Council decided to open a gymnasium in 1868, and work soon began on a building. Ready in little over a year, the school opened in November 1869. It had eighteen pupils taught by two teachers. Nicolae Droc Barcian joined the faculty in 1870, rising to principal in 1873 and becoming a prominent local figure. In 1890, Upon his suggestion, the school was named after 1848 revolutionary and education reformer Ion Maiorescu. The current school building was started in 1895 and completed the following year. During World War I, between 1916 and 1918, the school was closed, with teachers protesting its occupation by German troops.History at the Ion Maiorescu National College site< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Integral Equation
In mathematics, integral equations are equations in which an unknown Function (mathematics), function appears under an integral sign. In mathematical notation, integral equations may thus be expressed as being of the form: f(x_1,x_2,x_3,...,x_n ; u(x_1,x_2,x_3,...,x_n) ; I^1 (u), I^2(u), I^3(u), ..., I^m(u)) = 0where I^i(u) is an integral operator acting on ''u.'' Hence, integral equations may be viewed as the analog to differential equations where instead of the equation involving derivatives, the equation contains integrals. A direct comparison can be seen with the mathematical form of the general integral equation above with the general form of a differential equation which may be expressed as follows:f(x_1,x_2,x_3,...,x_n ; u(x_1,x_2,x_3,...,x_n) ; D^1 (u), D^2(u), D^3(u), ..., D^m(u)) = 0where D^i(u) may be viewed as a differential operator of order ''i''. Due to this close connection between differential and integral equations, one can often convert between the two. For examp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volterra Integral Equation
In mathematics, the Volterra integral equations are a special type of integral equations. They are divided into two groups referred to as the first and the second kind. A linear Volterra equation of the first kind is : f(t) = \int_a^t K(t,s)\,x(s)\,ds where ''f'' is a given function and ''x'' is an unknown function to be solved for. A linear Volterra equation of the second kind is : x(t) = f(t) + \int_a^t K(t,s)x(s)\,ds. In operator theory, and in Fredholm theory, the corresponding operators are called Volterra operators. A useful method to solve such equations, the Adomian decomposition method, is due to George Adomian. A linear Volterra integral equation is a convolution equation if : x(t) = f(t) + \int_^t K(t-s)x(s)\,ds. The function K in the integral is called the kernel. Such equations can be analyzed and solved by means of Laplace transform techniques. For a weakly singular kernel of the form K(t,s) = (t^2-s^2)^ with 0Defining x_ = x(s_), f_ = f(t_), and K_ = K( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Iași
The Alexandru Ioan Cuza University (Romanian: ''Universitatea „Alexandru Ioan Cuza"''; acronym: UAIC) is a public university located in Iași, Romania. Founded by an 1860 decree of Prince Alexandru Ioan Cuza, under whom the former Academia Mihăileană was converted to a university, the University of Iași, as it was named at first, is one of the oldest universities of Romania, and one of its advanced research and education institutions. It is one of the five members of the ''Universitaria Consortium'' (the group of elite Romanian universities). The Alexandru Ioan Cuza University offers study programmes in Romanian, English, and French. In 2008, for the third year in a row, it was placed first in the national research ranking compiled on the basis of Shanghai criteria. In the 2012 QS World University Rankings, Alexandru Ioan Cuza University was included in the Top 700 universities of the world, on the position 601+ , together with three other Romanian universities. The univers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iași
Iași ( , , ; also known by other alternative names), also referred to mostly historically as Jassy ( , ), is the second largest city in Romania and the seat of Iași County. Located in the historical region of Moldavia, it has traditionally been one of the leading centres of Romanian social, cultural, academic and artistic life. The city was the capital of the Principality of Moldavia from 1564 to 1859, then of the United Principalities from 1859 to 1862, and the capital of Romania from 1916 to 1918. Known as the Cultural Capital of Romania, Iași is a symbol of Romanian history. Historian Nicolae Iorga stated that "there should be no Romanian who does not know of it". Still referred to as "The Moldavian Capital", Iași is the main economic and business centre of Romania's Moldavian region. In December 2018, Iași was officially declared the Historical Capital of Romania. At the 2011 census, the city-proper had a population of 290,422 (making it the fourth most populous in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Costache Negruzzi National College
The Costache Negruzzi National College (''Colegiul Național „Costache Negruzzi”'') in Iași is one of the most prestigious high schools in Romania. Founded in 1895 as the ''Boarding High School of Iași'', it was named after the writer and politician Costache Negruzzi. History The Boarding High School of Iași opened its gates on 5 October 1895, following an English boarding school model, focused on a wide range of children (of different social and cultural statuses and religions) from the Romanian Old Kingdom and Transylvania Transylvania ( ro, Ardeal or ; hu, Erdély; german: Siebenbürgen) is a historical and cultural region in Central Europe, encompassing central Romania. To the east and south its natural border is the Carpathian Mountains, and to the west the Ap .... Notable staff and alumni References External links *Official site {{DEFAULTSORT:Costache Negruzzi National College Educational institutions established in 1895 Negruzzi National Col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roman, Romania
Roman () is a city located in the central part of Western Moldavia, a traditional region of Romania. It is located 46 km east of Piatra Neamț, in Neamț County at the confluence of the rivers Siret and Moldova. Its name was taken from Moldavian Voivode Roman I of Moldavia. From here prince Roman realized the centralization of Moldavia, the city of Roman being the capital of the Lower Country of Moldavia ( ro, Țara de Jos). History The earliest mention of the city is in the Novgorod Chronicle (dated between 1387 and 1392). Five years later, the name appeared on a donation deed. The city is mentioned in a Moldavian document, signed by Moldavia's Voivode Roman I, on March 30. The document is one of the first of documents of the then-young state of Moldavia, being the first which holds a fully legible version of the Moldavia seal, bearing the aurochs, the moon, the star, and the flower, still in use on coat of arms of Moldova. Roman became a diocesan see in September 14, 140 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
