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Ion Barbu, the Glossary

Index Ion Barbu

Ion Barbu (pen name of Dan Barbilian; 18 March 1895 –11 August 1961) was a Romanian mathematician and poet.[1]

Table of Contents

  1. 107 relations: Adevărul, Adolf Hitler, Aequationes Mathematicae, Alan Frank Beardon, Alba Iulia, Alexandru Macedonski, Alexandru Rosetti, American Mathematical Society, Apollonius of Perga, Argeș County, Bachelor of Science, Barbu Alinescu, Bârlad, Bellu Cemetery, Beltrami–Klein model, Bogdan Suceavă, Botoșani, Bucharest, Carl Friedrich Gauss, Câmpulung, Cocaine, Corneliu Zelea Codreanu, Daniel Ioniță (poet), Daniel Reynaud, David Emmanuel (mathematician), Dămienești, Dimitrie Pompeiu, Dinicu Golescu National College, Division ring, Doctor of Philosophy, Edmund Landau, Emmy Noether, Ether addiction, Euclidean distance, Eugen Lovinescu, Evenimentul Zilei, Expressionism, Șelimbăr, Frederick Gehring, Galați, Gale (publisher), Geometriae Dedicata, German Mathematical Society, Gheorghe Țițeica, Gheorghe Lazăr National College (Sibiu), Gheorghe Lazăr National College, Bucharest, Girard Desargues, Giurgiu, Grigore Moisil, Hărman, ... Expand index (57 more) »

  2. 20th-century Romanian inventors
  3. Mihai Viteazul National College (Bucharest) alumni
  4. People from Câmpulung
  5. Pseudonymous mathematicians
  6. Romanian avant-garde

Adevărul

(meaning "The Truth", formerly spelled Adevĕrul) is a Romanian daily newspaper, based in Bucharest.

See Ion Barbu and Adevărul

Adolf Hitler

Adolf Hitler (20 April 1889 – 30 April 1945) was an Austrian-born German politician who was the dictator of Nazi Germany from 1933 until his suicide in 1945.

See Ion Barbu and Adolf Hitler

Aequationes Mathematicae

Aequationes Mathematicae is a mathematical journal.

See Ion Barbu and Aequationes Mathematicae

Alan Frank Beardon

Alan Frank Beardon (April 16, 1940) is a British mathematician.

See Ion Barbu and Alan Frank Beardon

Alba Iulia

Alba Iulia (Karlsburg or Carlsburg, formerly Weißenburg; Gyulafehérvár; Apulum) is a city that serves as the seat of Alba County in the west-central part of Romania.

See Ion Barbu and Alba Iulia

Alexandru Macedonski

Alexandru Macedonski (also rendered as Al. A. Macedonski, Macedonschi or Macedonsky; 14 March 1854 – 24 November 1920) was a Romanian poet, novelist, dramatist and literary critic, known especially for having promoted French Symbolism in his native country, and for leading the Romanian Symbolist movement during its early decades. Ion Barbu and Alexandru Macedonski are 20th-century Romanian poets, Burials at Bellu Cemetery, members of the Romanian Academy elected posthumously and Romanian male poets.

See Ion Barbu and Alexandru Macedonski

Alexandru Rosetti

Alexandru Rosetti (October 20, 1895 – February 27, 1990) was a Romanian linguist, editor, and memoirist. Ion Barbu and Alexandru Rosetti are academic staff of the University of Bucharest, Romanian military personnel of World War I and university of Bucharest alumni.

See Ion Barbu and Alexandru Rosetti

American Mathematical Society

The American Mathematical Society (AMS) is an association of professional mathematicians dedicated to the interests of mathematical research and scholarship, and serves the national and international community through its publications, meetings, advocacy and other programs.

See Ion Barbu and American Mathematical Society

Apollonius of Perga

Apollonius of Perga (Ἀπολλώνιος ὁ Περγαῖος) was an ancient Greek geometer and astronomer known for his work on conic sections.

See Ion Barbu and Apollonius of Perga

Argeș County

Argeș County is a county (județ) of Romania, in Muntenia, with the capital city at Pitești.

See Ion Barbu and Argeș County

Bachelor of Science

A Bachelor of Science (BS, BSc, B.Sc., SB, or ScB; from the Latin scientiae baccalaureus) is a bachelor's degree that is awarded for programs that generally last three to five years.

See Ion Barbu and Bachelor of Science

Barbu Alinescu

Barbu Alinescu (20 January 1890–30 November 1952) was a major general of the Romanian Armed Forces during World War II. Ion Barbu and Barbu Alinescu are Romanian military personnel of World War I.

See Ion Barbu and Barbu Alinescu

Bârlad

Bârlad is a city in Vaslui County, Romania.

See Ion Barbu and Bârlad

Bellu Cemetery

Șerban Vodă Cemetery (commonly known as Bellu Cemetery) is the largest and most famous cemetery in Bucharest, Romania.

See Ion Barbu and Bellu Cemetery

Beltrami–Klein model

In geometry, the Beltrami–Klein model, also called the projective model, Klein disk model, and the Cayley–Klein model, is a model of hyperbolic geometry in which points are represented by the points in the interior of the unit disk (or n-dimensional unit ball) and lines are represented by the chords, straight line segments with ideal endpoints on the boundary sphere.

See Ion Barbu and Beltrami–Klein model

Bogdan Suceavă

Bogdan Suceavă (born September 27, 1969) is a Romanian-American mathematician and writer, working since 2002 as professor of mathematics at California State University Fullerton. Ion Barbu and Bogdan Suceavă are 20th-century Romanian male writers, 20th-century Romanian mathematicians, academic staff of the University of Bucharest, geometers and university of Bucharest alumni.

See Ion Barbu and Bogdan Suceavă

Botoșani

Botoșani is the capital city of Botoșani County, in the northern part of Moldavia, Romania.

See Ion Barbu and Botoșani

Bucharest

Bucharest (București) is the capital and largest city of Romania.

See Ion Barbu and Bucharest

Carl Friedrich Gauss

Johann Carl Friedrich Gauss (Gauß; Carolus Fridericus Gauss; 30 April 177723 February 1855) was a German mathematician, astronomer, geodesist, and physicist who contributed to many fields in mathematics and science.

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Câmpulung

Câmpulung (also spelled Cîmpulung,, Langenau, Old Romanian Dlăgopole, Длъгополе (from Middle Bulgarian)), or Câmpulung Muscel, is a city in Argeș County, Muntenia, Romania.

See Ion Barbu and Câmpulung

Cocaine

Cocaine (from, from, ultimately from Quechua: kúka) is a tropane alkaloid that acts as a central nervous system (CNS) stimulant.

See Ion Barbu and Cocaine

Corneliu Zelea Codreanu

Corneliu Zelea Codreanu (13 September 1899 – 30 November 1938), born Corneliu Zelinski and commonly known as Corneliu Codreanu, was a far right Romanian politician and the founder and charismatic leader of the Iron Guard or The Legion of the Archangel Michael (also known as the Legionary Movement), an ultranationalist and violently antisemitic organization active throughout most of the interwar period.

See Ion Barbu and Corneliu Zelea Codreanu

Daniel Ioniță (poet)

Daniel Ioniță (born 16 January 1960) is an Australian poet and translator of Romanian origin, who has been published bilingually in Australia, USA, and Romania.

See Ion Barbu and Daniel Ioniță (poet)

Daniel Reynaud

Daniel Reynaud (born 27 August 1958) is an Australian historian whose work on Australian war cinema and on Australian World War I soldiers and religion has challenged aspects of the Anzac legend, Australia’s most important national mythology built around the role of Australian servicemen, popularly known as Anzacs.

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David Emmanuel (mathematician)

David Emmanuel (31 January 1854 – 4 February 1941) was a Romanian Jewish mathematician and member of the Romanian Academy, considered to be the founder of the modern mathematics school in Romania. Ion Barbu and David Emmanuel (mathematician) are academic staff of the University of Bucharest.

See Ion Barbu and David Emmanuel (mathematician)

Dămienești

Dămienești is a commune in Bacău County, Western Moldavia, Romania.

See Ion Barbu and Dămienești

Dimitrie Pompeiu

Dimitrie D. Pompeiu (– 8 October 1954) was a Romanian mathematician, professor at the University of Bucharest, titular member of the Romanian Academy, and President of the Chamber of Deputies. Ion Barbu and Dimitrie Pompeiu are 20th-century Romanian mathematicians, academic staff of the University of Bucharest and members of the Romanian Academy of Sciences.

See Ion Barbu and Dimitrie Pompeiu

Dinicu Golescu National College

Dinicu Golescu National College (Colegiul Național Dinicu Golescu) is a high school located at 66 Negru Vodă Street, Câmpulung, Romania.

See Ion Barbu and Dinicu Golescu National College

Division ring

In algebra, a division ring, also called a skew field, is a nontrivial ring in which division by nonzero elements is defined.

See Ion Barbu and Division ring

Doctor of Philosophy

A Doctor of Philosophy (PhD or DPhil; philosophiae doctor or) is a terminal degree that usually denotes the highest level of academic achievement in a given discipline and is awarded following a course of graduate study and original research.

See Ion Barbu and Doctor of Philosophy

Edmund Landau

Edmund Georg Hermann Landau (14 February 1877 – 19 February 1938) was a German mathematician who worked in the fields of number theory and complex analysis.

See Ion Barbu and Edmund Landau

Emmy Noether

Amalie Emmy Noether (23 March 1882 – 14 April 1935) was a German mathematician who made many important contributions to abstract algebra.

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Ether addiction

Addiction to ether consumption, or etheromania, is the addiction to the inhalation or drinking of diethyl ether, commonly called "ether".

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Euclidean distance

In mathematics, the Euclidean distance between two points in Euclidean space is the length of the line segment between them.

See Ion Barbu and Euclidean distance

Eugen Lovinescu

Eugen Lovinescu (31 October 1881 – 16 July 1943) was a Romanian modernist literary historian, literary critic, academic, and novelist, who in 1919 established the Sburătorul literary club. Ion Barbu and Eugen Lovinescu are 20th-century Romanian male writers, members of the Romanian Academy elected posthumously, Romanian schoolteachers and university of Bucharest alumni.

See Ion Barbu and Eugen Lovinescu

Evenimentul Zilei

Evenimentul Zilei is a formerly physical and now exclusively online newspaper in Romania.

See Ion Barbu and Evenimentul Zilei

Expressionism

Expressionism is a modernist movement, initially in poetry and painting, originating in Northern Europe around the beginning of the 20th century.

See Ion Barbu and Expressionism

Șelimbăr

Șelimbăr (Schellenberg; Sellenberk) is a commune in central Romania, in the county of Sibiu in Transylvania, to the east of the county seat Sibiu.

See Ion Barbu and Șelimbăr

Frederick Gehring

Frederick William Gehring (7 August 1925 – 29 May 2012) was an American mathematician who worked in the area of complex analysis (quasi-conformal mappings).

See Ion Barbu and Frederick Gehring

Galați

Galați (also known by other alternative names) is the capital city of Galați County in the historical region of Western Moldavia, in eastern Romania.

See Ion Barbu and Galați

Gale (publisher)

Gale is a global provider of research and digital learning resources.

See Ion Barbu and Gale (publisher)

Geometriae Dedicata

Geometriae Dedicata is a mathematical journal, founded in 1972, concentrating on geometry and its relationship to topology, group theory and the theory of dynamical systems.

See Ion Barbu and Geometriae Dedicata

German Mathematical Society

The German Mathematical Society (Deutsche Mathematiker-Vereinigung, DMV) is the main professional society of German mathematicians and represents German mathematics within the European Mathematical Society (EMS) and the International Mathematical Union (IMU).

See Ion Barbu and German Mathematical Society

Gheorghe Țițeica

Gheorghe Țițeica (4 October 1873 – 5 February 1939) publishing as George or Georges Tzitzéica) was a Romanian mathematician who made important contributions in geometry. He is recognized as the founder of the Romanian school of differential geometry. Ion Barbu and Gheorghe Țițeica are 20th-century Romanian mathematicians, academic staff of the University of Bucharest, Burials at Bellu Cemetery, geometers and university of Bucharest alumni.

See Ion Barbu and Gheorghe Țițeica

Gheorghe Lazăr National College (Sibiu)

Gheorghe Lazăr National College (Colegiul Național "Gheorghe Lazăr") is a public day high school in Sibiu, in the Transylvania region of Romania, located at 1-3 Gheorghe Lazăr Street.

See Ion Barbu and Gheorghe Lazăr National College (Sibiu)

Gheorghe Lazăr National College, Bucharest

The Gheorghe Lazăr National College (Colegiul Național Gheorghe Lazăr) is a high school located in central Bucharest, Romania, at the southeast corner of the Cișmigiu Gardens, on the corner of Bulevardul Regina Elisabeta.

See Ion Barbu and Gheorghe Lazăr National College, Bucharest

Girard Desargues

Girard Desargues (21 February 1591September 1661) was a French mathematician and engineer, who is considered one of the founders of projective geometry.

See Ion Barbu and Girard Desargues

Giurgiu

Giurgiu (Gyurgevo) is a city in southern Romania.

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Grigore Moisil

Grigore Constantin Moisil (10 January 1906 – 21 May 1973) was a Romanian mathematician, computer pioneer, and titular member of the Romanian Academy. Ion Barbu and Grigore Moisil are 20th-century Romanian inventors, 20th-century Romanian mathematicians, academic staff of the University of Bucharest, members of the Romanian Academy of Sciences and Romanian schoolteachers.

See Ion Barbu and Grigore Moisil

Hărman

Hărman (German: Honigberg; Hungarian: Szászhermány) is a commune in Brașov County, Transylvania, Romania.

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Hermeticism

Hermeticism or Hermetism is a philosophical and religious system based on the purported teachings of Hermes Trismegistus (a Hellenistic conflation of the Greek god Hermes and the Egyptian god Thoth).

See Ion Barbu and Hermeticism

Historia Mathematica

Historia Mathematica: International Journal of History of Mathematics is an academic journal on the history of mathematics published by Elsevier.

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Humboldt University of Berlin

The Humboldt University of Berlin (Humboldt-Universität zu Berlin, abbreviated HU Berlin) is a public research university in the central borough of Mitte in Berlin, Germany.

See Ion Barbu and Humboldt University of Berlin

Hyperbolic geometry

In mathematics, hyperbolic geometry (also called Lobachevskian geometry or Bolyai–Lobachevskian geometry) is a non-Euclidean geometry.

See Ion Barbu and Hyperbolic geometry

Interwar period

In the history of the 20th century, the interwar period (or interbellum) lasted from 11November 1918 to 1September 1939 (20years, 9months, 21days) – from the end of World War I (WWI) to the beginning of World War II (WWII).

See Ion Barbu and Interwar period

Ion Brătianu National College (Pitești)

The "Ion C. Brătianu" National College (Colegiul Național Ion C. Brătianu) is a comprehensive four-year public high school with 1,200 students enrolled in grades 9 through 12.

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Iron Guard

The Iron Guard (Garda de Fier) was a Romanian militant revolutionary fascist movement and political party founded in 1927 by Corneliu Zelea Codreanu as the Legion of the Archangel Michael (Legiunea Arhanghelul Mihail) or the Legionary Movement (Mișcarea Legionară).

See Ion Barbu and Iron Guard

Jordan curve theorem

In topology, the Jordan curve theorem, formulated by Camille Jordan in 1887, asserts that every Jordan curve (a plane simple closed curve) divides the plane into an "interior" region bounded by the curve and an "exterior" region containing all of the nearby and far away exterior points.

See Ion Barbu and Jordan curve theorem

Journal of Geometry

The Journal of Geometry is a triannual peer-reviewed scientific journal covering geometry, broadly considered.

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Kari Hag

Kari Jorun Blakkisrud Hag (born April 4, 1941) is a Norwegian mathematician known for her research in complex analysis on quasicircles and quasiconformal mappings, and for her efforts for gender equality in mathematics.

See Ion Barbu and Kari Hag

Kingdom of Romania

The Kingdom of Romania (Regatul României) was a constitutional monarchy that existed from 13 March (O.S.) / 25 March 1881 with the crowning of prince Karl of Hohenzollern-Sigmaringen as King Carol I (thus beginning the Romanian royal family), until 1947 with the abdication of King Michael I and the Romanian parliament's proclamation of the Romanian People's Republic.

See Ion Barbu and Kingdom of Romania

Leonard Blumenthal

Leonard Mascot Blumenthal (February 27, 1901 – August 1984) was a Jewish American mathematician.

See Ion Barbu and Leonard Blumenthal

Liver failure

Liver failure is the inability of the liver to perform its normal synthetic and metabolic functions as part of normal physiology.

See Ion Barbu and Liver failure

Mathematical Reviews

Mathematical Reviews is a journal published by the American Mathematical Society (AMS) that contains brief synopses, and in some cases evaluations, of many articles in mathematics, statistics, and theoretical computer science.

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Mathematician

A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems.

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Mathematics

Mathematics is a field of study that discovers and organizes abstract objects, methods, theories and theorems that are developed and proved for the needs of empirical sciences and mathematics itself.

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Mathematics Subject Classification

The Mathematics Subject Classification (MSC) is an alphanumerical classification scheme that has collaboratively been produced by staff of, and based on the coverage of, the two major mathematical reviewing databases, Mathematical Reviews and Zentralblatt MATH.

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Metric space

In mathematics, a metric space is a set together with a notion of distance between its elements, usually called points.

See Ion Barbu and Metric space

Mihai Viteazul National College, Bucharest

Mihai Viteazul National College (Colegiul Național Mihai Viteazul) is a high school located at 62 Pache Protopopescu Boulevard, Bucharest, Romania.

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Ministry of Education (Romania)

The Ministry of Education (Ministerul Educației) is one of the ministries of the Government of Romania.

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Murfatlar

Murfatlar is a town in Constanța County, Northern Dobruja, Romania.

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Nina Cassian

Nina Cassian (pen name of Renée Annie Cassian-Mătăsaru; 27 November 1924, in Galați – 14 April 2014, in New York City) was a Romanian poet, children's book writer, translator, journalist, accomplished pianist and composer, and film critic. Ion Barbu and Nina Cassian are 20th-century Romanian poets.

See Ion Barbu and Nina Cassian

Number theory

Number theory (or arithmetic or higher arithmetic in older usage) is a branch of pure mathematics devoted primarily to the study of the integers and arithmetic functions.

See Ion Barbu and Number theory

Parnassianism

Parnassianism (or Parnassism) was a group of French poets that began during the positivist period of the 19th century (1860s–1890s), occurring after romanticism and prior to symbolism.

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Paul Kelly (mathematician)

Paul Joseph Kelly (June 26, 1915 – July 15, 1995) was an American mathematician who worked in geometry and graph theory.

See Ion Barbu and Paul Kelly (mathematician)

Pen name

A pen name is a pseudonym (or, in some cases, a variant form of a real name) adopted by an author and printed on the title page or by-line of their works in place of their real name.

See Ion Barbu and Pen name

Pitești

Pitești is a city in Romania, located on the river Argeș.

See Ion Barbu and Pitești

Poet

A poet is a person who studies and creates poetry.

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Poetry

Poetry (from the Greek word poiesis, "making") is a form of literary art that uses aesthetic and often rhythmic qualities of language to evoke meanings in addition to, or in place of, literal or surface-level meanings.

See Ion Barbu and Poetry

Poincaré disk model

In geometry, the Poincaré disk model, also called the conformal disk model, is a model of 2-dimensional hyperbolic geometry in which all points are inside the unit disk, and straight lines are either circular arcs contained within the disk that are orthogonal to the unit circle or diameters of the unit circle.

See Ion Barbu and Poincaré disk model

Polirom

Polirom or Editura Polirom ("Polirom" Publishing House) is a Romanian publishing house with a tradition of publishing classics of international literature and also various titles in the fields of social sciences, such as psychology, sociology, and anthropology.

See Ion Barbu and Polirom

Projective plane

In mathematics, a projective plane is a geometric structure that extends the concept of a plane.

See Ion Barbu and Projective plane

Ring (mathematics)

In mathematics, rings are algebraic structures that generalize fields: multiplication need not be commutative and multiplicative inverses need not exist.

See Ion Barbu and Ring (mathematics)

Romania

Romania is a country located at the crossroads of Central, Eastern, and Southeast Europe.

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Romanian Baccalaureate

The Bacalaureat (or bac for short) is an exam held in Romania when one graduates high school (liceu).

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Romanians

Romanians (români,; dated exonym Vlachs) are a Romance-speaking ethnic group and nation native to Central, Eastern, and Southeastern Europe. Sharing a common culture and ancestry, they speak the Romanian language and live primarily in Romania and Moldova. The 2021 Romanian census found that 89.3% of Romania's citizens identified themselves as ethnic Romanians.

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România Literară

România Literară is a cultural and literary magazine from Romania.

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Sânmartin, Bihor

Sânmartin (Váradszentmárton) is a commune in Bihor County, Crișana, Romania with a population of 9,572 people.

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Sburătorul

Sburătorul was a Romanian modernist literary magazine and literary society, established in Bucharest in April 1919. Ion Barbu and Sburătorul are Romanian avant-garde.

See Ion Barbu and Sburătorul

Sector 4 (Bucharest)

Sector 4 (Sectorul 4) is an administrative unit of Bucharest.

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Sibiu

Sibiu (Hermannstadt, Cibinium, Transylvanian Saxon: Härmeschtat or Hermestatt, Nagyszeben) is a middle-sized, well-preserved fortified medieval town in central Romania, situated in the historical region of Transylvania (Transilvania, Siebenbürgen or Transsilvanien). Located some north-west of Bucharest, the town straddles the Cibin River, a tributary of the Olt River.

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Snagov

Snagov is a commune, located north of Bucharest, in Ilfov County, Muntenia, Romania.

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The Socialist Republic of Romania (Republica Socialistă România, RSR) was a Marxist–Leninist one-party socialist state that existed officially in Romania from 1947 to 1989 (see Revolutions of 1989).

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Stâlpeni

Stâlpeni is a commune in Argeș County, Muntenia, Romania.

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The American Mathematical Monthly

The American Mathematical Monthly is a mathematical journal founded by Benjamin Finkel in 1894.

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Timișoara

Timișoara (Temeswar, also Temeschwar or Temeschburg; Temesvár; Temišvar; see other names) is the capital city of Timiș County, Banat, and the main economic, social and cultural centre in Western Romania.

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Timpul

Timpul (Romanian for "The Time") is a literary magazine published in Romania.

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University of Bucharest

The University of Bucharest (UB) (Universitatea din București) is a public research university in Bucharest, Romania.

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University of Göttingen

The University of Göttingen, officially the Georg August University of Göttingen, (Georg-August-Universität Göttingen, commonly referred to as Georgia Augusta) is a distinguished public research university in the city of Göttingen, Lower Saxony, Germany.

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University of Groningen

The University of Groningen (abbreviated as UG; Rijksuniversiteit Groningen, abbreviated as RUG) is a public research university of more than 30,000 students in the city of Groningen in the Netherlands.

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University of Missouri

The University of Missouri (Mizzou or MU) is a public land-grant research university in Columbia, Missouri.

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University of Tübingen

The University of Tübingen, officially the Eberhard Karl University of Tübingen (Eberhard Karls Universität Tübingen; Universitas Eberhardina Carolina), is a public research university located in the city of Tübingen, Baden-Württemberg, Germany.

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Victoria University of Wellington

Victoria University of Wellington (Te Herenga Waka) is a public research university in Wellington, New Zealand.

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Wilhelm Klingenberg

Wilhelm Paul Albert Klingenberg (28 January 1924 – 14 October 2010) was a German mathematician who worked on differential geometry and in particular on closed geodesics.

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World War I

World War I (alternatively the First World War or the Great War) (28 July 1914 – 11 November 1918) was a global conflict between two coalitions: the Allies (or Entente) and the Central Powers.

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Zalău

Zalău (unofficial and former official name: Zalău (Zillenmarkt or Waltenberg, Zilah, Zile) is the seat of Sălaj County, Romania. In 2021, its estimated population was 52,359.

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1 Decembrie

1 Decembrie is a commune in the south of Ilfov County, Muntenia, Romania, composed of a single village, 1 Decembrie.

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See also

20th-century Romanian inventors

Mihai Viteazul National College (Bucharest) alumni

People from Câmpulung

Pseudonymous mathematicians

Romanian avant-garde

References

[1] https://en.wikipedia.org/wiki/Ion_Barbu

Also known as Barbu, Ion, Dan Barbilian.

, Hermeticism, Historia Mathematica, Humboldt University of Berlin, Hyperbolic geometry, Interwar period, Ion Brătianu National College (Pitești), Iron Guard, Jordan curve theorem, Journal of Geometry, Kari Hag, Kingdom of Romania, Leonard Blumenthal, Liver failure, Mathematical Reviews, Mathematician, Mathematics, Mathematics Subject Classification, Metric space, Mihai Viteazul National College, Bucharest, Ministry of Education (Romania), Murfatlar, Nina Cassian, Number theory, Parnassianism, Paul Kelly (mathematician), Pen name, Pitești, Poet, Poetry, Poincaré disk model, Polirom, Projective plane, Ring (mathematics), Romania, Romanian Baccalaureate, Romanians, România Literară, Sânmartin, Bihor, Sburătorul, Sector 4 (Bucharest), Sibiu, Snagov, Socialist Republic of Romania, Stâlpeni, The American Mathematical Monthly, Timișoara, Timpul, University of Bucharest, University of Göttingen, University of Groningen, University of Missouri, University of Tübingen, Victoria University of Wellington, Wilhelm Klingenberg, World War I, Zalău, 1 Decembrie.