?
Number Theory in Memory of Eduard Wirsing ,
1
On the Greatest Common Divisor of a Number and Its Sum of D..:
, In:
?
Steps into Analytic Number Theory; Problem Books in Mathematics ,
2
Solutions to Special Step C:
, In:
?
Steps into Analytic Number Theory; Problem Books in Mathematics ,
9
Solutions to Special Step A:
, In:
?
Steps into Analytic Number Theory; Problem Books in Mathematics ,
12