Fall 2007 Math 2B evaluation results

Here’s what students are saying about me.

AMS citing

Somehow I have appeared as the example on how to cite AMS journals online… here

That’s sort of weird.

I’ve hit the big time (sort of)

I’ve appeared on mathscinet, which is a big day for me. I am now mathematician 813491. Here is my listing.

The Coin Problem and a Theorem of Sylvester

I’ve recently stumbled upon the following classical problem from recreational math and since I haven’t seen a proof of it online, I thought I would provide one. The coin problem is the following. Suppose you are given a treasury containing types of coins: they have the values , and these values (collectively) have no common factor. It is a fact that any sufficiently large amount can be obtained using only these coins, and so it would be nice to know the first amount that can be obtained with the property that every amount larger can be obtained but the value before it cannot. See this for more information.

Math Genealogy

I entered my information onto the math genealogy website and I have finally appeared:

Gregory Knese

Here is my genealogy:

Me, John McCarthy, Donald Sarason, Paul Halmos, Joseph Doob, Joseph Walsh, and here it splits into two pieces…