Miklós Laczkovich (born 21 February 1948) is a Hungarian mathematician mainly noted for his work on

real analysis In mathematics, the branch of real analysis studies the behavior of real numbers, sequences and series of real numbers, and real functions. Some particular properties of real-valued sequences and functions that real analysis studies include conv ...

and geometric measure theory. His most famous result is the solution of

Tarski's circle-squaring problem Tarski's circle-squaring problem is the challenge, posed by Alfred Tarski in 1925, to take a disc in the plane, cut it into finitely many pieces, and reassemble the pieces so as to get a square of equal area. This was proven to be possible by Mikl ...

in 1989.Ruthen, R. (1989) ''Squaring the Circle'',

Scientific American ''Scientific American'', informally abbreviated ''SciAm'' or sometimes ''SA'', is an American popular science magazine. Many famous scientists, including Albert Einstein and Nikola Tesla, have contributed articles to it. In print since 1845, it ...

261(1), 22-24.

Career

Laczkovich received his degree in mathematics in 1971 at Eötvös Loránd University, where he has been teaching ever since, currently leading the Department of Analysis. He was also a professor at

University College London , mottoeng = Let all come who by merit deserve the most reward , established = , type = Public research university , endowment = £143 million (2020) , budget = ...

, where he is now a

professor emeritus ''Emeritus'' (; female: ''emerita'') is an adjective used to designate a retired chair, professor, pastor, bishop, pope, director, president, prime minister, rabbi, emperor, or other person who has been "permitted to retain as an honorary title ...

. He became corresponding member (1993), then member (1998) of the Hungarian Academy of Sciences. He has held several guest professor positions in the UK, Canada, Italy and the United States. Also being a prolific author, he published over 100 papers and two books, one of which, ''Conjecture and Proof'', was an international success. One of his results is the solution of the Kemperman problem: if ''f'' is a real function which satisfies 2''f''(''x'') ≤ f(''x'' + ''h'') + ''f''(''x'' + 2''h'') for every ''h'' > 0, then ''f'' is monotonically increasing.

Books

Honours

* Ostrowski Prize (1993) * Member of the Hungarian Academy of Sciences (corresponding: 1993, full: 1998) * Széchenyi Prize (1998)

Trivium

Laczkovich enjoys and performs classical music; he has been active in various choirs in the past decades.

References

External links

Homepage at Eötvös Loránd University

an ensemble focused on 15th-century

polyphonic music Polyphony ( ) is a type of musical texture consisting of two or more simultaneous lines of independent melody, as opposed to a musical texture with just one voice, monophony, or a texture with one dominant melodic voice accompanied by chords, h ...

, of which he is a member 1948 births Living people 20th-century Hungarian mathematicians 21st-century Hungarian mathematicians Members of the Hungarian Academy of Sciences Academics of University College London {{Europe-mathematician-stub