Andrea

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location Pisa, Italy
age 24
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67 Answers

newest activity votes
11
Is the radical of an irreducible ideal irreducible?
9
Is the number of prime ideals of a zero-dimensional ring stable under base change?
9
Finite subgroups of the multiplicative group of a field
7
Intersection of irreducible components of a smooth curve
7
Motivation behind the definition of flat module
6
Similar Matrices
6
Linearly disjoint field extensions
5
Invertible modules are locally free of rank 1
5
Is there a $C^\infty$ function $f$ s. t. the convergent radius of Maclaurin series of $f$ is $0$?
5
In $K[X,Y]$, is the power of any prime also primary?
5
Artinian local $k$-algebra
5
Proving $2,3,1+\sqrt{-5}$ and $1-\sqrt{-5}$ are irreducible in $\mathbb{Z}[\sqrt{-5}]$
5
Noetherian integral domain such that $m/m^2$ is a one-dimensional vector space over $A/m$
5
The total ring of fractions of a reduced Noetherian ring
5
How to Compute Genus
4
algebraic curves with negative (arithmetic) genus?
4
Confusion about local properties + trying to show a finite morphism is quasi-finite
4
If the localization of a ring $R$ at every prime ideal is an integral domain, must $R$ be an integral domain?
4
Can a matrix in $\mathbb{R}$ have a minimal polynomial that has coefficients in $\mathbb{C}$?
4
Primary ideals of Noetherian rings which are not irreducible
4
Are there Zariski-continuous maps between algebraic sets that are not polynomial maps?
3
Dimension of tangent space of a projective variety
3
How to prove $\mathcal{l}(D+P) \leq \mathcal l{(D)} + 1$
3
Spectrum of finite $k$-algebras
3
Knot with genus $1$ and trivial Alexander polynomial?
3
a simple question about a local ring, and modules.
3
Atiyah-Macdonald Ex8.6
3
Similar Matrices
3
Homology of $\mathbb{R}^3 - S^1$
3
Some iterate of a linear operator over $\mathbf F_q$ is a projection
1 2 3