Celebratio Mathematica

P. T. Bateman and E. Grosswald: “On a theorem of Erdős and Szekeres,” Ill. J. Math. 2 : 1 (1958), pp. 88–98. MR 0095804 Zbl 0079.07104 article

P. T. Bateman and E. Grosswald: “Imaginary quadratic fields with unique factorization,” Ill. J. Math. 6 : 1 (1962), pp. 187–192. Dedicated to Hans Rademacher on the occasion of his seventieth birthday. MR 0138617 Zbl 0100.03103 article

Hans Adolph Rademacher	Related
Emil Grosswald	Related

P. T. Bateman and E. Grosswald: “On Epstein’s zeta function,” Acta Arith. 9 : 4 (1964), pp. 365–373. Dedicated to Professor L. J. Mordell on the occasion of his seventy-fifth birthday. MR 0179141 Zbl 0128.27004 article

Louis Joel Mordell	Related
Emil Grosswald	Related

P. T. Bateman, P. Erdős, C. Pomerance, and E. G. Straus: “The arithmetic mean of the divisors of an integer,” pp. 197–220 in Analytic number theory (Philadelphia, PA, 12–15 May 1980). Edited by M. I. Knopp. Lecture Notes in Mathematics 899. Springer (Berlin), 1981. Dedicated to Emil Grosswald on the occasion of his sixty-eighth birthday. MR 654528 Zbl 0478.10027 incollection

Marvin Isadore Knopp	Related
Paul Erdős	Related
Carl Bernard Pomerance	Related
Ernst Gabor Straus	Related
Emil Grosswald	Related

P. T. Bateman and E. Grosswald: “Positive integers expressible as a sum of three squares in essentially only one way,” J. Number Theory 19 : 3 (December 1984), pp. 301–308. Dedicated to the memory of Ernst Straus (1922–1983) [misprinted on paper as “Strass”]. MR 769785 Zbl 0558.10038 article

The set \( S \) consisting of those positive integers \( n \) which are uniquely expressible in the form \[ n = a^2 + b^2 + c^2, \quad a \geq b \geq c \geq 0 ,\] is considered. Since \( n \in S \) if and only if \( 4n \in S \), we may restrict attention to those \( n \) not divisible by 4. Classical formulas and the theorem that there are only finitely many imaginary quadratic fields with given class number imply that there are only finitely many \( n \in S \) with \( n = 0 \pmod{4} \). More specifically, from the existing knowledge of all the imaginary quadratic fields with odd discriminant and class number 1 or 2 it is readily deduced that there are precisely twelve positive integers \( n \) such that \( n \in S \) and \( n \in 3 \pmod8 \). To determine those \( n \in S \) such that \( n \equiv 1,2 \), \( 5,6 \pmod8 \) requires the determination of the imaginary quadratic fields with even discriminant and class number 1, 2, or 4. While the latter information is known empirically, it has not been proved that the known list of 33 such fields is complete. If it is complete, then our arguments show that there are exactly 21 positive integers \( n \) such that \( n \in S \) and \( n \equiv 1,2 \), \( 5,6 \pmod8 \).

Ernst Gabor Straus	Related
Emil Grosswald	Related

P. T. Bateman: “Integers expressible in a given number of ways as a sum of two squares,” pp. 37–45 in A tribute to Emil Grosswald: Number theory and related analysis. Edited by M. I. Knopp and M. Sheingorn. Contemporary Mathematics 143. American Mathematical Society (Providence, RI), 1993. Dedicated to the memory of Elizabeth and Emil Grosswald. MR 1210510 Zbl 0790.11032 incollection

Marvin Isadore Knopp	Related
Mark Sheingorn	Related
Emil Grosswald	Related
Elizabeth Grosswald	Related

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