bio | website | marksapir.wordpress.com |
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location | Nashville, TN | |
age | ||
visits | member for | 4 years, 11 months |
seen | yesterday | |
stats | profile views | 29,129 |
Professor of Mathematics at Vanderbilt University
May 10 |
reviewed | Leave Open Which operators other than self-adjoint operators have no purely imaginary eigenvalues? |
May 10 |
reviewed | Leave Open quantum deformation |
May 10 |
comment |
Class field towers
@FranzLemmermeyer Your and David Loeffler's comments do help finding true motivation for the class tower problem. Thanks! |
Apr 24 |
comment |
Class field towers
@quid Yes, it is the same paper, published in Abh. Math. Semin. Univ. Hambg. (2009) 79: 165–187. |
Apr 24 |
comment |
Class field towers
@quid I looked at that discussion. As far as I understand from Lemmermeyer's paper (the link on that page is broken, but I found the paper anyway), it is more about ideals and their unique prime decompositions, i.e., class number 1, than about general class number. It is good to know that reciprocity laws played important role in the development of the theory of ideal numbers. I did not know that before. FLT also played a role, whether decisive or not - it is not that important to me. |
Apr 24 |
awarded | Nice Question |
Apr 23 |
revised |
Class field towers
Corrected a misprint in the second line. |
Apr 23 |
comment |
Class field towers
Thank you! It does make sense. But at least FLT was the main reason for defining the class number. Right? |
Apr 23 |
comment |
Class field towers
The question was more about motivation. I always thought that FLT was the motivation for the class tower problem. But it looks like there is no close relation. |
Apr 23 |
accepted | Class field towers |
Apr 23 |
comment |
Class field towers
Thank you very much! |
Apr 23 |
comment |
Class field towers
@DavidLoeffler: If the class number of $\mathbb{Q}[\zeta]$ is 1, $\zeta^n=1$, then FLT for that $n$ follows, right? Isn't it enough to assume that $\zeta$ is inside a number field with class number 1? |
Apr 23 |
comment |
Class field towers
@DavidLoeffler: Would the case when $p$ is prime imply FLT? |
Apr 23 |
asked | Class field towers |
Apr 10 |
comment |
Can an algebraic number on the unit circle have a conjugate with absolute value different from 1?
As I said, the coefficients are algebraic integers and stable under the action of the Galois group. Hence these coefficients are rational integers. What's wrong? |
Apr 9 |
comment |
Can an algebraic number on the unit circle have a conjugate with absolute value different from 1?
@YCor: Do you know what Vieta's formulas are, en.wikipedia.org/wiki/Vieta%27s_formulas ? I have edited the answer making it more accessible. |
Apr 7 |
reviewed | Leave Open a question on 0-1 valued stochastic process |
Apr 7 |
revised |
Can an algebraic number on the unit circle have a conjugate with absolute value different from 1?
added 103 characters in body |
Apr 7 |
comment |
Examples of theorems with proofs that have dramatically improved over time
@MCC: The fact that modular machines are equivalent to Turing machines is obvious and is explained in the 10-page proof. |
Feb 24 |
awarded | semigroups |