arXiv:1912.06345math.NT
The Irrationality Measure of Pi is at most 7.103205334137...
Early discovery. Linked by one identifiable commenter. This paper is outside the main ranking; a mention is not an endorsement.
Abstract
We use a variant of Salikhov's ingenious proof that the irrationality measure of $π$ is at most $7.606308\dots$ to prove that, in fact, it is at most $7.103205334137\dots$. Accompanying Maple package: While this article has a fully rigorous human-made and human-readable proof of the claim in the title, it was discovered thanks to the Maple package available from http://sites.math.rutgers.edu/~zeilberg/mamarim/mamarimhtml/pimeas.html
Fun fact: Mahler famously showed that if p/q is a rational number then |\pi - p/q| > 1/q^42. So we can't have a string of 4242T zeros after first 101T digits :-) The exponent 42 has since been improved by a series of works to 7.1032 - https://arxiv.org/abs/1912.06345
madarsView on HNParent context