When I tackle a Wordle puzzle, I like to make all the key decisions myself. My three assistants set up puzzles and suggest words when I ask for help, but I guide the actual solution. My assistants also make it possible for me to play Wordle anywhere, anytime, even when my laptop is in airplane mode. I don't need the New York Times or access to the Web.... read more >>

(The January 5 posting was premature and incomplete.)... read more >>

Quaternions are generalizations of the complex numbers that have found applications in computer graphics and many other fields.... read more >>

I am giving a five-minute talk today, May 26, at the virtual seminar on Complexity of Matrix Computations. Here are my slides. Two new MATLAB functions, tred and imtql, instrumented to count flops, are available in symeig.m.... read more >>

What do the years 2018, 2029 and 2040 have in common? They are the only years in the 21st century when Easter Sunday occurs on April Fools Day.... read more >>

Recently, I had email from a student in Italy.... read more >>

This post is by my colleague Cosmin Ionita.... read more >>

This week’s post is by Reece Teramoto.
MathWorks recently took over sponsorship of the Math Modeling Challenge, a contest for high school juniors and seniors in the U.S organized by SIAM – Society... read more >>

Find the optimum traveling salesman tour through the capitals of the 48 contiguous states in the USA.... read more >>

Today is Easter Sunday. Why? How is the date of Easter determined?... read more >>