**Correspondence of mathematicians I. László Kalmár**

Title:

**Levelezés matematikusokkal I. Kalmár László levelezése magyar matematikusokkal**

[Letöltés]

Szerző(k): Szabó Péter Gábor PhD - Szegedi Egyetem, Számítógépes Optimalizálás Tanszék

Rovat: Bibliográfiai források

Kötet: 2013/7

DOI: 10.17107/KH.2013.7.174-178

Kulcsszavak: matematika története Magyarországon, 20. század, levelezés matematikusokkal Keywords: History of Mathematics in Hungary, 20th century, correspondence with mathematicians |

Abstract: László Kalmár (1905-1976) was the leader of Hungarian mathematical logic at the University of Szeged. He was an excellent mathematician and one of the best-known pioneers of Computer Science in Hungary. Kalmár's scientific legacy is an important source of the History of Mathematics and the History of Computer Science. In his working career he had over 700 corresponding partners, mathematicians, and other scientists among them. In our project, we published two books based on Kalmár's legacy. We examined László Kalmár's correspondence with 24 Hungarian mathematicians: with János Aczél, Lajos Dávid, Paul Erdős, Lipót Fejér, István Fenyő, Géza Grünwald, Béla Gyires, György Hajós, John von Neumann, Andor Kertész, Dénes Kőnig, Imre Lakatos, Dezső Lázár, Tibor Radó, László Rédei, Alfréd Rényi, Frigyes Riesz, János Surányi, Tibor Szele, Barna Szénássy, Béla Szőkefalvi-Nagy, Pál Turán, Tamás Varga, and István Vincze. The books contain more than 500 letters with 1000 comments and many other documents, photos, and biographical data. |

László Kalmár (1905-1976) created enduring more areas of mathematics and found outstanding results in Mathematical Logic. He was an excellent professor of mathematics at the University of Szeged, and became the leader of Hungarian mathematical logic. Kalmár was involved in Cybernetics as well, and promoted the development of Computer Science in Hungary. In the autumn of 1957, he began teaching computer programming at the University of Szeged, and he developed a logical machine in the following year. Kalmár is one of the best-known pioneers of Computer Science in Hungary. In 1997, one of the world's largest organizations of computer technology, the IEEE Computer Society, posthumously awarded him the Computer Pioneer Award.
László Kalmár's scientific legacy is in the University Library of the University of Szeged in southern Hungary. Kalmár's archives consists of many interesting documents, manuscripts and letters, and it is a good source for research into the Hungarian History of Mathematics and History of Computer Science. Kalmár in his lifetime had more than 700 corresponding partners, numerous Hungarian and non-Hungarian mathematicians, and other scientists. In our project, we examined the Kalmár's archive and published his correspondence with 24 Hungarian mathematicians. There is a lot of interesting mathematical and historical information contained in these letters. Rózsa Péter wrote in one of her articles [2] that these letters could be one of the "main-sources" for someone who wants to study the History of Mathematics in the 20th century in Hungary. KALMÁRIUM I and II [3, 4] contain over 500 letters of correspondence with scientists with around 1000 comments. We first published lots of photos, biographies, and manuscripts. In addition, the books contain two Kalmár-interviews.
The first volume of KALMÁRIUM was published for the 100th anniversary of the birth of László Kalmár in 2005. There are four autobiographies of Kalmár in this book written in 1939, 1951, 1966, and 1976, in the last year of his life. The corresponding partners in KALMÁRIUM I are the following Hungarian mathematicians:
Paul Erdős wrote more than 1500 mathematical articles in his lifetime. Kalmár helped him when he was writing his first paper on new proof of Tchebycheff 's theorem. At that time, Erdős was 18 years old, and he was a student at the University of Budapest. Erdős wrote the following in his reminiscences [1]:
Later they kept in contact by mail. In the Kalmár's archive there are 21 letters by Paul Erdős.
"Dear L. Kalmár! Let us consider the following function..."
The second volume of KALMÁRIUM contains eleven articles on Kalmár's life and works written by his colleagues, students, and friends. The reader can find an interview with Kalmár, amusing selected notes from his approximately 150 notebooks, and a collection of short stories and anecdotes about Kalmár. The main part of this book is the correspondence of Hungarian (or of Hungarian origin) mathematicians with Kalmár. These mathematicians are the following:
John von Neumann's early work in mathematical logic had a big influence on Kalmár. They knew each other personally, and in a von Neumann letter to Kalmár, KALMÁRIUM II contains the job recommendation that John von Neumann sent to him in 1946. This text is a recommendation for a professor status at the University of Szeged.
KALMÁRIUM contains 565 letters between Kalmár and several Hungarian mathematicians. We thought this work might be a useful source for historians of mathematics and academic researchers.
[1] ERDŐS, P.: Néhány személyes és matematikai emlékem Kalmár Lászlóról, [2] PÉTER, R.: Kalmár László matematikai munkássága, [3] SZABÓ, P. G.: [4] SZABÓ, P. G.: KALMÁRIUM II. Kalmár László levelezése magyar matematikusokkal (Aczél János, Fenyő István, Gyires Béla, Hajós György, Lakatos Imre, Lázár Dezső, Neumann János, Radó Tibor, Surányi János, Szénássy Barna, Szőkefalvi-Nagy Béla, Vincze István), Polygon, Szeged, 2008. |