It appears that there have been some advances in the matrix multiplication algorithm.
The article refers to these two papers:
https://epubs.siam.org/doi/10.1137/1.9781611977912.134
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amazing
The laser method is not intended to be practical;
it’s just a way to think about the ideal way to multiply matrices.
“We never run the method [on a computer],” Zhou said. “We analyze it.”