Here is last week's puzzle, as originally posted: Perfect numbers are numbers that equal the sum of their divisors. For example, the number 6 can be divided evenly by 1, 2, and 3, and 6 = 1 + 2 + 3.
Pair correlation theory examines the distribution of spacings between elements of numerical sequences when scaled to a natural local scale. In its most classical setting, one considers a sequence of ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results