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Leon Mirsky's family left Russia for Germany when he was 8 years old, but in 1933 they were forced to leave Germany and settled in Bradford, England. Leon entered King's College, London, in 1936. At first he studied for the Intermediate examination after which he was awarded a scholarship to study for a degree in mathematics. During this time he took a passionate interest in the theory of numbers and became a great admirer of Edmund Landau.
Leon graduated from London in 1940 and began work on an M.Sc. However the war meant that students from King's College were sent to Bristol University and it was there that he completed his Master's degree. In 1942 he was appointed to Sheffield University and, except for short spell at Manchester and Bristol (working with Heilbronn), he was to spend the rest of his career at Sheffield (where he was to work unsupervised for a Ph.D. which was awarded in 1949).
Mirsky had three main areas of research.
A finite family of sets has a system of distinct representatives if and only if the union of every k sets of the family contains at least k elements .
... bears witness to Mirsky's gift for exposition; his hallmark was elegance combined with clarity.
Mirsky's talent for teaching was clearly related to his gifts as a writer and is described in [2] as follows:
Leon was a born teacher. He welcomed the challenge of presenting a whole theory or just one proof in a logical, efficient, clear and elegant manner. ... His lectures ... were highly individual performances. There was never any hint of familiarity with his audience and Leon always wore a gown to emphasize the formality of the occasion. On the other hand, the alert student could spot a succession of jokes all made with an entirely straight face and no change of tone.
He believed that mathematics research should not be a solitary occupation, but firmly believed in collaborating with others [1]:
He was particularly eager to share ideas at research level and firmly believed that research should always be a cooperative rather than competitive venture.
Outside mathematics Mirsky had a wide variety of interests [1]:
His knowledge of literature, history and philosophy was wide and, in some areas, almost professional. Many of his former colleagues will miss the stimulus of conversations with him on these and a host of other subjects.
Article by: J J O'Connor and E F Robertson
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List of References (4 books/articles)
 
A Poster of Leon Mirsky
 Mathematicians born in the same country

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