Some years ago the author defined a pseudo inverse of a singular matrix and used it in representing a solution of normal equations and for obtaining variances and covariances of estimates in the ...

They had to throw away most of what it produced but there was gold among the garbage. Google DeepMind has used a large language model to crack a famous unsolved problem in pure mathematics. In a paper ...

Gergonne’s pile problem, goes by numerous names and variations. In this article, we described how this problem, in the guise of a well-known card trick, can be explained and reproduced by a simple ...