Pairs of Sums of Three Squares of Integers Whose Product Has the Same Property

Author(s):  
Olga Taussky
1942 ◽  
Vol 64 (1/4) ◽  
pp. 503 ◽  
Author(s):  
Gordon Pall

1991 ◽  
Vol 98 (6) ◽  
pp. 527-529 ◽  
Author(s):  
John B. Kelly

2009 ◽  
Vol 145 (6) ◽  
pp. 1401-1441 ◽  
Author(s):  
V. Blomer ◽  
J. Brüdern ◽  
R. Dietmann

AbstractLet R(n,θ) denote the number of representations of the natural number n as the sum of four squares, each composed only with primes not exceeding nθ/2. When θ>e−1/3 a lower bound for R(n,θ) of the expected order of magnitude is established, and when θ>365/592, it is shown that R(n,θ)>0 holds for large n. A similar result is obtained for sums of three squares. An asymptotic formula is obtained for the related problem of representing an integer as the sum of two squares and two squares composed of small primes, as above, for any fixed θ>0. This last result is the key to bound R(n,θ) from below.


1987 ◽  
Vol 27 (3) ◽  
pp. 273-284 ◽  
Author(s):  
A. Arenas ◽  
P. Bayer

1957 ◽  
Vol 8 (2) ◽  
pp. 316-316 ◽  
Author(s):  
N. C. Ankeny

1989 ◽  
Vol 21 (4) ◽  
pp. 369-374 ◽  
Author(s):  
A. H. Osbaldestin ◽  
P. Shiu

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