I am proud to say I started this article on Wikipedia back when I was in grad school 18 years ago! https://en.m.wikipedia.org/wiki/Hessian_matrix https://en.m.

I am proud to say I started this article on Wikipedia back when I was in grad school 18 years ago! https://en.m.wikipedia.org/wiki/Hessian_matrix https://en.m.wikipedia.org/wiki/Hessian_matrix My contribution: https://en.m.wikipedia.org/w/index.php?title=Hessian_matrix&oldid=2827364 https://en.m.wikipedia.org/w/index.php?title=Hessian_matrix&... I wrote the original sections, and have watched it evolve over the years. A lot of my original phrases are still in there (eg “However, more can be said from the point of view of [Morse Theory]). I didn’t actually understand Morse Theory, just linked to the article as it seemed relevant. Back then I was a bit of a practical joker (still am) so I pushed the limits a bit and claimed that the Hessian of a higher-dimensional vector space is a tensor of rank 3. I just kind of made that up - generalizing it. The first few years, a few people were a bit bewildered but eventually, an entire theoretical background was produced to support this generalization, and it is now in the article! I find that fascinating :) https://en.wikipedia.org/wiki/Talk:Hessian_matrix https://en.wikipedia.org/wiki/Talk:Hessian_matrix