bio  website  

location  Seattle, WA  
age  71  
visits  member for  3 years, 8 months 
seen  12 hours ago  
stats  profile views  2,048 
Contact: rudytoody.AT.comcast.DOT.net
I retired in 2006 and bought Mathematica and a stack of math books with the goal to teach myself to become a worldclass mathematician. I am on pace to achieve that goal sometime shortly after the next Ice Age.
I consider myself a Mathematical Mutt (no papers) who occasionally ventures off the back porch to play in the yard with the big dogs.
I donate regularly to the The OEIS Foundation.
When I look at the patterns, I can hear the wheels turning. When I look at the math, I find out the hamsters have died.
Apr 16 
awarded  Yearling 
Apr 13 
answered  Deep Learning / Deep neural nets for mathematician 
Mar 26 
comment 
Uninteresting questions with interesting answers
@bubba, Carpenters call it kerf and they must account for it to build things. Sawmills do the same to determine boardfeet of a log. The volume of this kerf is the sawdust. 
Feb 17 
answered  Insightful books about elementary mathematics 
Feb 10 
comment 
Primes and Parity
1) Assuming Oppermann's conjecture, if you set $k=N+1$, you have primes in every interval. Don't know about the parity, though. 
Feb 7 
comment 
Mathematics of Computer science and AI
You can check out experimentalmathematics posts, here and at math.SE.

Jan 28 
comment 
Surveys of the items of Erdős' “toolbox”
You might try Tricki. 
Jan 17 
awarded  Good Question 
Jan 17 
revised 
$\prod_{n=1}^{\infty} n^{\mu(n)}=\frac{1}{4 \pi ^2}$
added a link 
Jan 11 
revised 
Fundamental problems whose solution seems completely out of reach
added link to new proof 
Jan 3 
comment 
Are there any serious investigations of whether “mathematicians do their best work when they're young”?
I think that as an individual becomes more accomplished in her specialty, her employer rewards her with promotions. Each step up that ladder requires more time for nonspecialty duties. Therefore, less time for creativity and thus fewer papers. 
Dec 26 
awarded  Popular Question 
Dec 4 
comment 
$\zeta(0)$ and the cotangent function
From Edwards, p 12, (1): for $n=0$,$$\zeta (2 n)=\frac{(1)^{n+1} 2^{2 n1} \pi ^{2 n} B_{2 n}}{(2 n)!}=\frac{(1)^{n+1} 2^{2 n1} \pi ^{2 n}}{(2 n)!}=\frac{1}{2},$$ with and without the Bernoulli number. 
Sep 11 
suggested  rejected edit on experimentalmathematics tag wiki excerpt 
Sep 2 
comment 
Recognize this strange expression from linear algebra?
+1 for indexspaghetti 
Aug 11 
awarded  Notable Question 
Aug 11 
revised 
$\prod_{n=1}^{\infty} n^{\mu(n)}=\frac{1}{4 \pi ^2}$
added note that the bug has been corrected in Mathematica V.10 
Aug 10 
comment 
Palindromic Patterns of Greatest Divisors $\leq k$
@PerAlexandersson, math.stackexchange.com/q/886041/28555 shows another identity (conjecture) based on the same palindromic divisor sequence. 
Aug 10 
comment 
Palindromic Patterns of Greatest Divisors $\leq k$
@PerAlexandersson, math.stackexchange.com/q/867135/28555 points to a post that explains how I found it. mathematica.stackexchange.com/q/48452/973 points to the Mathematica code for the recursive routine. 
Aug 10 
comment 
Palindromic Patterns of Greatest Divisors $\leq k$
Actually, it is not a counterexample. See modified OP. $2193$ is a multiple of 17, inside the 17seg which shows it is a derangement. 