Fractal Sets and Arithmetic Progressions
If a set of positive integers contains no arithmetic progressions, how large can it be? In this post, we study this question in the context of harmonic sums.
If a set of positive integers contains no arithmetic progressions, how large can it be? In this post, we study this question in the context of harmonic sums.
Our modern calendar, the Gregorian calendar, introduced several changes to the Julian calendar, including the introduction of a three-step algorithm for determining leap years.
But just how accurate is the Gregorian model? Can centuries of mathematics and astronomy lead us to a more accurate calendar?