59

Answers
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7
Commutative Algebra with a View Toward Algebraic Number Theory
7
sums of rational squares
2
relations between class numbers of quadratic extensions
8
Geometric Interpretation of the Lower Central Series for the Fundamental Group?
23
Realizing groups as commutator subgroups
4
A metabelian quotient of a free group
11
Unramified extensions of number fields
3
Lower bound on the class group of the p-Hilbert class field of an imaginary quadr. field
5
On what kind of objects do the Galois groups act?
11
Conceptualizing Weil Pairing for elliptic curves ( and number fields)
10
Where can I find a modern write-up of Heegner’s solution of Gauss' class number 1 problem?
7
Explicitly describable maximal unramified extension of a number field
12
Does $\pi_1(Spec(\mathbb{Z}[1/p]))$ depend on p?
7
A coverage question
13
number fields with no unramified extensions?
4
Congruences mod primes in Galois extensions
4
Algebraic integers on the unit circle
9
Spencer-Brown’s claimed proof of the four color theorem
25
Can an algebraic number on the unit circle have a conjugate with absolute value different from 1?
7
Kummer generator for the Ribet extension
14
How divisible is the average integer?
20
Have any long-suspected irrational numbers turned out to be rational?
4
Is there an image for you that epitomizes mathematics?
12
Is there a ring of integers except for Z, such that every extension of it is ramified?
2
{transcendental numbers} \ {computable transcendental numbers}
3
Origami Constructions: Intersecting two Circles
3
Calculus on rationals
2
How to fit res map into a long exact sequence?
13
Most squares in the first half-interval
8
Maximal extension almost everywhere unramified and totally split at one place
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