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Haim Hanani

1912 – 1991

Israeli mathematician

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About Haim Hanani

Lived 1912 – 1991 (aged 78). Haim Hanani was a Polish mathematician and university teacher.

Haim Hanani (; as Chaim Chojnacki– 8 April 1991) was a Polish-born Israeli mathematician, known for his contributions to combinatorial design theory, in particular for the theory of pairwise balanced designs and for the proof of an existence theorem for Steiner quadruple systems. He is also known for the Hanani–Tutte theorem on odd crossings in non-planar graphs.

Life Hanani (Chojnacki) was born in Poland, studied in Vienna and Warsaw, and graduated with an M.A. from the University of Warsaw in 1934. He emigrated to the British Mandate of Palestine, later to become Israel, in 1935 and in 1938 received the first Ph.D. in Mathematics from the Hebrew University of Jerusalem.

In 1955 he was appointed to the faculty at Technion Institute of Technology and from 1969 to 1973 he served as the rector of Ben-Gurion University in Beersheba. In 1980 he was awarded the title of Professor Emeritus at that institution.

His papers were published in journals such as Discrete Mathematics, the Journal of Combinatorial Theory, the European Journal of Combinatorics, and the American Mathematical Monthly.

Academic papers

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Important facts

Birth century
Nationality
Education
Hebrew University of Jerusalem, University of Vienna, Hebrew University
Employers
Ben-Gurion University of the Negev, Technion – Israel Institute of Technology
Also known as
Chaim Chojnacki

Contemporaries

People whose lives overlapped Haim Hanani's

Frequently asked questions

Who was Haim Hanani?

Israeli mathematician (1912–1991)

When was Haim Hanani born?

Haim Hanani was born on 3 September 1912 in Słupca.

When did Haim Hanani die?

Haim Hanani died on 8 April 1991.

What was Haim Hanani's occupation?

Haim Hanani was a mathematician and university teacher.

What nationality was Haim Hanani?

Haim Hanani was Polish.

Sources & further reading

· Wikipedia: Haim Hanani

· Wikidata: Q5639296

· DBpedia: Haim Hanani

Cite this page

APA: Biography.guide. (2026). Haim Hanani. https://biography.guide/haim-hanani/

MLA: "Haim Hanani." Biography.guide, https://biography.guide/haim-hanani/.

Chicago: "Haim Hanani." Biography.guide. https://biography.guide/haim-hanani/.

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