Arnold F. Emch (24 March 1871 – 1959) was an American mathematician, known for his work on the

inscribed square problem The inscribed square problem, also known as the square peg problem or the Toeplitz' conjecture, is an unsolved question in geometry: ''Does every plane simple closed curve contain all four vertices of some square?'' This is true if the curve is ...

. Emch received his Ph.D. in 1895 at the

University of Kansas The University of Kansas (KU) is a public research university with its main campus in Lawrence, Kansas, United States, and several satellite campuses, research and educational centers, medical centers, and classes across the state of Kansas. Tw ...

under the supervision of Henry Byron Newson. In the late 1890s until 1905 he was an assistant professor of graphic mathematics in the school of engineering at the Kansas State Agricultural College (now

Kansas State University Kansas State University (KSU, Kansas State, or K-State) is a public land-grant research university with its main campus in Manhattan, Kansas, United States. It was opened as the state's land-grant college in 1863 and was the first public instit ...

). In 1905 Emch became a professor of mathematics at the Kantonsschule in Solothurn, Switzerland. In 1908 Emch gave a lecture at the

International Congress of Mathematicians The International Congress of Mathematicians (ICM) is the largest conference for the topic of mathematics. It meets once every four years, hosted by the International Mathematical Union (IMU). The Fields Medals, the Nevanlinna Prize (to be rename ...

Rome , established_title = Founded , established_date = 753 BC , founder = King Romulus (legendary) , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption ...

. From 1911 to 1939 he was a professor at the

University of Illinois Urbana-Champaign The University of Illinois Urbana-Champaign (U of I, Illinois, University of Illinois, or UIUC) is a public land-grant research university in Illinois in the twin cities of Champaign and Urbana. It is the flagship institution of the University ...

. His wife was Hilda Walters Emch (1875–1962) and they had two sons, Walter Emch and Arnold Frederick Emch (1899–1989), a well-known management consultant.

Selected publications

* (PhD dissertation) * * * * * * * * * * * *

References

External links

* 1871 births 1959 deaths 19th-century American mathematicians 20th-century American mathematicians University of Kansas alumni University of Illinois Urbana-Champaign faculty {{US-mathematician-stub