In this case, AlphaTensor discovered an algorithm for multiplying 4 by 4 matrices in just 47 multiplications, thereby improving on Strassen’s 50-year-old two-level algorithm, which uses 49 ...

The Google-owned lab said the research “sheds light” on a 50-year-old open question in mathematics about finding the fastest way to multiply two matrices. Ever since the Strassen algorithm was ...