Albert Victor Bäcklund (January 11, 1845 – February 23, 1912) was a Swedish mathematician and physicist. He was a professor at Lund University and its rector from 1907 to 1909. January 11 is the 11th day of the year in the Gregorian Calendar. ... 1845 was a common year starting on Wednesday (see link for calendar). ... February 23 is the 54th day of the year in the Gregorian Calendar. ... The Kingdom of Sweden (Swedish: Konungariket Sverige  listen) is a Nordic country in Scandinavia, in Northern Europe. ... A mathematician is a person whose area of study and research is mathematics. ... The word physicist should not be confused with physician, which means medical doctor. ... A professor is a senior teacher and researcher, usually in a college or university. ... Lund University Lund University (Swedish: Lunds universitet) is a university in Lund in southernmost Sweden. ... The word rector (ruler, from the Latin regere) has a number of different meanings. ...

He was born in Malmöhus län in southern Sweden and became a student at Lund University. In 1864 he started to work for the observatory, and received his Ph.D. in 1868 working on methods to obtain the latitude of a place by astronomical observations. He was awarded the title of associate professor in Mechanics and Mathematical Physics in 1878, and elected Fellow of the Swedish Academy of Science in 1888. In 1897 he became a full professor. Events January - March January 21 - Maori Wars: The Tauranga Campaign starts. ... Categories: Stub | Astronomical observatories ... 1868 was a leap year starting on Wednesday (see link for calendar). ... Latitude, denoted φ, gives the location of a place on Earth north or south of the Equator. ... A professor is a senior teacher and researcher, usually in a college or university. ... Mathematical physics is the scientific field in between mathematics and physics; it studies the problems inspired by physics within a mathematically rigorous framework. ... Events January - April January – Cleopatras Needle arrives in London January 9 - Humbert I becomes King of Italy January 23 – Disraeli orders British fleet to Dardanelles January 28 - The Yale News becomes the first daily, college newspaper in the United States. ... 1888 is a leap year starting on Sunday (click on link for calendar). ... Events January 1 - Brooklyn, New York merges with New York City. ...

In 1874 he was awarded a travel grant to study abroad for six months. He went to the universities at Leipzig and Erlangen to work with Felix Klein and Ferdinand von Lindemann. Events January - April January 1 - New York City annexes The Bronx January 23 - Marriage of the Duke of Edinburgh, second son of Queen Victoria, to Grand Duchess Marie Alexandrovna of Russia, only daughter of Emperor Alexander III of Russia. ... Map of Germany showing Leipzig Leipzig [ˈlaiptsɪç] (Sorbian/Lusatian: Lipsk) is the largest city in the federal state (Bundesland) of Saxony in Germany. ... Erlangen is a German city in Middle Franconia. ... Felix Christian Klein (April 25, 1849 – June 22, 1925) was a German mathematician. ... Carl Louis Ferdinand von Lindemann (April 12, 1852 - March 6, 1939) was a German mathematician, noted for his proof, published in 1882, that π is a transcendental number, i. ...

His most important work was in the field of transformations pioneered by Sophus Lie. He improved greatly the understanding of contact transformations and introduced a new second class transformation, now known as auto-Bäcklund transformation. Marius Sophus Lie (December 17, 1842 - February 18, 1899) was a Norwegian-born mathematician who largely created the theory of continuous symmetry, and applied it to the study of geometric structures and differential equations. ...

See also

• Bäcklund transform

External links

• Short bio (http://web.maths.unsw.edu.au/~schief/backlund.html)