13,974 reputation
13672
bio website zakuski.math.utsa.edu/~jagy
location Berkeley, California
age 57
visits member for 4 years, 7 months
seen 2 hours ago
My main activity is in number theory of integral positive ternary quadratic forms. This began through years of working with Irving Kaplansky. Much of his unpublished writing on quadratic forms can be found as pdfs at http://zakuski.math.utsa.edu/~kap/forms.html and about Lie and Jordan superalgebras at http://zakuski.math.utsa.edu/~kap/superalgebra.html One of my own email addresses can be found easily using the search feature at http://www.ams.org/cml and just putting in my last name

Aug
24
comment Why Adrian Vasiu did not get the fields medal?
I think the trouble is that Vasiu's supporters would not reveal their real names.
Aug
19
comment A conjectured formula for Apéry numbers
@Gerry, yes, I was going to mention him and found that I could not be sure of the spelling. It seems quite a good book, I will probably buy it, I don't buy many books these days.
Aug
18
comment A conjectured formula for Apéry numbers
Just a suggestion, Wadim Zudilin quit MO some time ago; he is a CARMA at Newcastle, Australia. His sort of thing. I write to him with questions occasionally, he sends brief answers or references. Has a new book with Shallit and Borwein cambridge.org/us/academic/subjects/mathematics/number-theory/…
Aug
17
comment A group allowing exactly 7 group topologies
why do you want to know?
Aug
15
comment For integers $a \ge b > 1$ is $f(a,b) = a^b + b^a$ injective?
No real matter; the best I could do up to $10^{1000}$ was $a=46,b=154,c=7,d=303,$ both about $1.16066 \cdot 10^{256}.$ Ratio about 1.000000104, relative error about 1 part in 9,574,939.
Aug
15
comment For integers $a \ge b > 1$ is $f(a,b) = a^b + b^a$ injective?
@TimothyChow, it's a pity. Very impressive to see thousands of these huge numbers, 100 digits long but no more than four agree.
Aug
15
revised For integers $a \ge b > 1$ is $f(a,b) = a^b + b^a$ injective?
added 38 characters in body
Aug
14
revised For integers $a \ge b > 1$ is $f(a,b) = a^b + b^a$ injective?
added 1156 characters in body
Aug
14
revised For integers $a \ge b > 1$ is $f(a,b) = a^b + b^a$ injective?
added 58 characters in body
Aug
14
revised For integers $a \ge b > 1$ is $f(a,b) = a^b + b^a$ injective?
added 58 characters in body
Aug
14
answered For integers $a \ge b > 1$ is $f(a,b) = a^b + b^a$ injective?
Aug
14
comment When is a cubic polynomial a cube?
math.stackexchange.com/questions/896661/…
Jul
31
comment Is any particular algebraic number known to have unbounded continued fraction coefficients?
@GerryMyerson, thanks, that was the other side of the question
Jul
31
comment Is any particular algebraic number known to have unbounded continued fraction coefficients?
@XL_at_China, no idea. What is your background?
Jul
31
awarded  Custodian
Jul
31
comment Is any particular algebraic number known to have unbounded continued fraction coefficients?
@StevenStadnicki, voted to approve edit
Jul
31
reviewed Approve suggested edit on Is any particular algebraic number known to have unbounded continued fraction coefficients?
Jul
18
comment overlap quadratic residues
ummm. why do you want to know?
Jul
18
comment Negative impact of wrong or non-rigorous proofs
Deane, I don't know. There are many other examples at the same question, maybe some will be helpful. Mine was a gap that was fixed, most of those answers are things that remained wrong.
Jul
18
comment Negative impact of wrong or non-rigorous proofs
old answer, mathoverflow.net/questions/35468/…