I wrote to Allyn Jackson, who is in charge of this feature. I reproduce her response below with her permission.
I can indeed answer this, and unfortunately the answer is no.
Embarassingly, we don't
have an online index for the WHAT IS column. The Notices web site is rather
and there is no natural place to put such a list. We are hoping to do an
and this would include a WHAT IS index.
I knew about the list of WHAT IS columns at Cornell, but I didn't know about
one at arminstraub.com. I have my own list that I use in editing the
column, and, like
arminstraub, I have column #106 as Heil's "What is a frame?" So it seems to
the arminstraub list is complete, but I did not check every title against my
own list. The
last column in my list is #110, so arminstraub is missing the 4 latest
It is gratifying to know that there are some serious WHAT IS fans out there.
and suggestions are welcome and can be sent to email@example.com.