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...versities or institutes in several countries, including France, Australia, Germany, Italy, and the United States.<ref name=bio/> ...l|doi=10.1007/BF01146412|title=On the extension of a sequence of functions to a complete orthonormal system|year=1969|last1=Olevskii|first1=A. M.|journal ...

...iversity]] in 1942, and then a similar position in Manchester; he returned to Sheffield in 1945, where (except for a term as visiting faculty at Bristol) ...et of the [[prime number]]s, and Mirsky proved theorems for them analogous to [[Vinogradov's theorem]], [[Goldbach's conjecture]], and the [[twin prime]] ...