38 relations: Academy of Sciences of the Institute of Bologna, Accademia dei Lincei, Albert Einstein, Algebra, Asteroid, Bernhard Riemann, Bologna, Covariant derivative, Dynamical system, Elwin Bruno Christoffel, Enrico Betti, Eugenio Beltrami, Felix Klein, Italians, Joseph-Louis Lagrange, Lingua franca, List of minor planets: 13001–14000, Lugo, Emilia-Romagna, Mathematician, Mathematics, Pisa, Pontifical Academy of Sciences, Pope Pius IX, Real number, Ricci calculus, Ricci curvature, Ricci flow, Richard Dedekind, Riemannian geometry, Rudolf Lipschitz, Sapienza University of Rome, Scuola Normale Superiore di Pisa, Technical University of Munich, Tensor, Tensor calculus, Tullio Levi-Civita, Ulisse Dini, Vatican City.

## Academy of Sciences of the Institute of Bologna

The Academy of Sciences of the Institute of Bologna (Accademia delle Scienze dell'Istituto di Bologna) is an academic society in Bologna, Italy, that was founded in 1714 and prospered in the Age of Enlightenment.

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## Accademia dei Lincei

The Accademia dei Lincei (literally the "Academy of the Lynx-Eyed", but anglicised as the Lincean Academy) is an Italian science academy, located at the Palazzo Corsini on the Via della Lungara in Rome, Italy.

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## Albert Einstein

Albert Einstein (14 March 1879 – 18 April 1955) was a German-born theoretical physicist who developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).

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## Algebra

Algebra (from Arabic "al-jabr", literally meaning "reunion of broken parts") is one of the broad parts of mathematics, together with number theory, geometry and analysis.

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## Asteroid

Asteroids are minor planets, especially those of the inner Solar System.

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## Bernhard Riemann

Georg Friedrich Bernhard Riemann (17 September 1826 – 20 July 1866) was a German mathematician who made contributions to analysis, number theory, and differential geometry.

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## Bologna

Bologna (Bulåggna; Bononia) is the capital and largest city of the Emilia-Romagna Region in Northern Italy.

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## Christmas

Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.

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## Christmas and holiday season

The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.

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## Christmas Eve

Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.

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## Christmas traditions

Christmas traditions vary from country to country.

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## Covariant derivative

In mathematics, the covariant derivative is a way of specifying a derivative along tangent vectors of a manifold.

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## Dynamical system

In mathematics, a dynamical system is a system in which a function describes the time dependence of a point in a geometrical space.

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## Elwin Bruno Christoffel

Elwin Bruno Christoffel (November 10, 1829 – March 15, 1900) was a German mathematician and physicist.

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## Enrico Betti

Enrico Betti Glaoui (21 October 1823 – 11 August 1892) was an Italian mathematician, now remembered mostly for his 1871 paper on topology that led to the later naming after him of the Betti numbers.

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## Eugenio Beltrami

Eugenio Beltrami (16 November 1835 – 18 February 1900) was an Italian mathematician notable for his work concerning differential geometry and mathematical physics.

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## Felix Klein

Christian Felix Klein (25 April 1849 – 22 June 1925) was a German mathematician and mathematics educator, known for his work with group theory, complex analysis, non-Euclidean geometry, and on the associations between geometry and group theory.

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## Italians

The Italians (Italiani) are a Latin European ethnic group and nation native to the Italian peninsula.

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## Joseph-Louis Lagrange

Joseph-Louis Lagrange (or;; born Giuseppe Lodovico Lagrangia, Encyclopædia Britannica or Giuseppe Ludovico De la Grange Tournier, Turin, 25 January 1736 – Paris, 10 April 1813; also reported as Giuseppe Luigi Lagrange or Lagrangia) was an Italian Enlightenment Era mathematician and astronomer.

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## Lingua franca

A lingua franca, also known as a bridge language, common language, trade language, auxiliary language, vernacular language, or link language is a language or dialect systematically used to make communication possible between people who do not share a native language or dialect, particularly when it is a third language that is distinct from both native languages.

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## List of minor planets: 13001–14000

#fefefe | 13712 || || August 23, 1998 || Višnjan Observatory || Višnjan Obs.

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## Lugo, Emilia-Romagna

Lugo (Lùgh) is a town and comune in the northern Italian region of Emilia-Romagna, in the province of Ravenna.

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## Mathematician

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

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## Mathematics

Mathematics (from Greek μάθημα máthēma, "knowledge, study, learning") is the study of such topics as quantity, structure, space, and change.

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## New Year

New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.

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## New Year's Day

New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.

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## New Year's Eve

In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.

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## Pisa

Pisa is a city in the Tuscany region of Central Italy straddling the Arno just before it empties into the Ligurian Sea.

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## Pontifical Academy of Sciences

The Pontifical Academy of Sciences (Pontificia accademia delle scienze, Pontificia Academia Scientiarum) is a scientific academy of the Vatican City, established in 1936 by Pope Pius XI, and thriving with the blessing of the Papacy ever since.

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## Pope Pius IX

Pope Pius IX (Pio; 13 May 1792 – 7 February 1878), born Giovanni Maria Mastai-Ferretti, was head of the Catholic Church from 16 June 1846 to his death on 7 February 1878.

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## Real number

In mathematics, a real number is a value of a continuous quantity that can represent a distance along a line.

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## Ricci calculus

In mathematics, Ricci calculus constitutes the rules of index notation and manipulation for tensors and tensor fields.

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## Ricci curvature

In differential geometry, the Ricci curvature tensor, named after Gregorio Ricci-Curbastro, represents the amount by which the volume of a small wedge of a geodesic ball in a curved Riemannian manifold deviates from that of the standard ball in Euclidean space.

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## Ricci flow

In differential geometry, the Ricci flow (Italian) is an intrinsic geometric flow.

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## Richard Dedekind

Julius Wilhelm Richard Dedekind (6 October 1831 – 12 February 1916) was a German mathematician who made important contributions to abstract algebra (particularly ring theory), axiomatic foundation for the natural numbers, algebraic number theory and the definition of the real numbers.

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## Riemannian geometry

Riemannian geometry is the branch of differential geometry that studies Riemannian manifolds, smooth manifolds with a Riemannian metric, i.e. with an inner product on the tangent space at each point that varies smoothly from point to point.

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## Rudolf Lipschitz

Rudolf Otto Sigismund Lipschitz (14 May 1832 – 7 October 1903) was a German mathematician who made contributions to mathematical analysis (where he gave his name to the Lipschitz continuity condition) and differential geometry, as well as number theory, algebras with involution and classical mechanics.

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## Sapienza University of Rome

The Sapienza University of Rome (Italian: Sapienza – Università di Roma), also called simply Sapienza or the University of Rome, is a collegiate research university located in Rome, Italy.

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## Scuola Normale Superiore di Pisa

The Scuola Normale Superiore di Pisa (SNS) is a public higher learning institution in Pisa, Italy.

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## Technical University of Munich

Technical University of Munich (TUM) (Technische Universität München) is a research university with campuses in Munich, Garching and Freising-Weihenstephan.

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## Tensor

In mathematics, tensors are geometric objects that describe linear relations between geometric vectors, scalars, and other tensors.

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## Tensor calculus

In mathematics, tensor calculus or tensor analysis is an extension of vector calculus to tensor fields (tensors that may vary over a manifold, e.g. in spacetime).

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## Tullio Levi-Civita

Tullio Levi-Civita, FRS (29 March 1873 – 29 December 1941) was an Italian mathematician, most famous for his work on absolute differential calculus (tensor calculus) and its applications to the theory of relativity, but who also made significant contributions in other areas.

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## Ulisse Dini

Ulisse Dini (14 November 1845 – 28 October 1918) was an Italian mathematician and politician, born in Pisa.

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## Vatican City

Vatican City (Città del Vaticano; Civitas Vaticana), officially the Vatican City State or the State of Vatican City (Stato della Città del Vaticano; Status Civitatis Vaticanae), is an independent state located within the city of Rome.

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## 2018

2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.

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## 2019

2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.

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## Redirects here:

G Ricci- Curbastro, Georgorio Ricci-Curbastro, Gregorio Ricci, Gregorio Ricci Curbastro, Gregorio ricci-curbastro.