Tags
Prizes
More
FAQ
Problem Lists
Definitions
Links
How to help
Go
Go
All
Random Solved
Random Open
OPEN
Let $A=\{n_1<\cdots<n_r\}$ be a finite set of integers. What is the minimum value of the density of integers not hit by a suitable choice of congreunces $a_i\pmod{n_i}$? Is the minimum achieved when all the $a_i$ are equal?
#278
:
[ErGr80]
number theory
,
covering systems
Previous
Next