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Alberto Andrenucci's user avatar
Alberto Andrenucci's user avatar
Alberto Andrenucci's user avatar
Alberto Andrenucci
  • Member for 7 years, 8 months
  • Last seen more than 3 years ago
  • Università di Pisa - Dipartimento di Matematica
7 votes

What is the limit of $n \sin (2 \pi \cdot e \cdot n!)$ as $n$ goes to infinity?

6 votes

Orthonormalizing a basis of eigenvectors

6 votes

Does $1 \cup 2$ has any meaning?

5 votes

Arrangement of $4$ pieces on a chess board

4 votes

Finding the eigenvectors associated with the eigenvalues

3 votes
Accepted

How to determine $[\Bbb Q(\sqrt2,\sqrt{-3}):\Bbb Q]$ and $[\Bbb Q(\sqrt[3]2,\zeta_3\sqrt[3]{2}):\Bbb Q]$?

3 votes
Accepted

Linear Algebra: describing all possible matrices $A$

3 votes

What's the fastest way to determine all the subgroups of the additive group $\mathbb{Z}_{24}$

3 votes

Power $k$ of a Jordan nilpotent block has ones on its upper diagonal of order $k+1$.

3 votes

Proving projection map is a linear map

2 votes

Evaluate $\int e^{-3x} \cos^3x\,dx$

2 votes
Accepted

Proving log properties

2 votes

Finding rank of matrix A^2 =A

2 votes

For matrices, when does $(A+B)C(D+E)=ACD+ACE+BCD+BCE$ hold?

2 votes

How to find $\ker T$ from matrix representation over polynomial finite field?

2 votes

Why $1\equiv a^{p-1} \mod p$?

2 votes

What is $\left|\bigcup\limits_{n=0}^{10}\{n\}\right|$ supposed to be?

1 vote

Number $ e $ formula significance

1 vote
Accepted

Showing $\langle 2x+1,5\rangle$ is a maximal ideal

1 vote

Function: zeroes, extreme values and inflection points

1 vote
Accepted

Homogeneous system of linear equations

1 vote

Integrate : $\int (1+2x+3x^2+4x^3+\cdots )dx $

1 vote

proving f(n) is strictly less than 2.4 when $n\geq 1$

1 vote

Injectivity of a transformation on vector spaces over the same field ex

1 vote

Combinations or permutations

1 vote
Accepted

Orthogonal projection on the image of a linear operator

1 vote

$\sqrt{\lambda}$ is an eigenvalues of $A$

1 vote

Linearly independence of the set $\{I_n, A, A^2, \dots, A^{n^2} \}$, where $A$ is a square matrix

1 vote

How to Find Associated Matrix to Linear Transformation

1 vote

Graduate Matrix Analysis