That’s where Strassen’s laser method finally comes into play. “The laser method typically works very well and generally finds a good way to kill a subset of blocks to remove the overlap,” Le Gall said. After the laser has eliminated, or “burned away,” all the overlaps, you can construct the final product matrix, C. Putting these various techniques together results in an algorithm for multiplying two matrices with a deliberately stingy number of multiplications overall — at least in theory. The l...