29

Answers

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2

Generalization of the two bucket puzzle

9

Can we categorify the equation (1 - t)(1 + t + t^2 + …) = 1?

1

Morphisms of (quasi-)projective varieties

12

Different definitions of the dimension of an algebra (2)

0

Use of traces in physics

2

A ring such that all projectives are stably free but not all projectives are free?

12

Are there any finitely generated artinian modules that are not notherian?

4

Maximal Ideals in Formal Laurent Series Rings?

1

Examples of left reversible semigroups

2

Is there a good account of D-affinity and localization theorem for partial flag varieties?

1

Subtle counterexample to $m\neq n$ but $R^m=R^n$ for some ring $R$ ?

3

how many semi direct products are there?

0

Given a sequence defined on the positive integers, how should it be extended to be defined at zero?

1

How to construct pair of adjoint functors from category A to category A_D(category of diagrams)

5

D-modules on rigid analytic spaces

3

Comparing lower central series and augmentation ideal completions

10

Isomorphic but non-conjugate subgroups of $GL(n,\mathbb{Z})$ ?

1

Generic Noether Normalisation

3

Non-free projective modules for a Universal Enveloping Algebra?

3

How does one identify properties of objects with good “inheritance”?

10

Can an infinite conjugacy class in a group split into more than one conjugacy class in some subgroup of finite index?

2

Bi-embeddability vs. isomorphism

2

Relation between Lie Algebra Cohomology and Number of Relations of a Cyclic Module?

1

virtual chain conditions in groups

2

Separable and Fin. Gen. Projective but not Frobenius?

1

Spectrum theorem for p-adic matrix analysis

4

Zero-divisors in a graded Lie algebra

4

Polycyclic group not of type $FP_\infty$

1

Continuation of homomorphisms of representations…