Since $N^3 \neq 0$, it follows that the minimal polynomial of $N$ is $z^4$. _Exercise 2_ Similarly, the characteristic polynomial is $z^6$ and a quick computation ...

We are now ready to define vector spaces. The idea is to observe that sets of column vectors, or row vectors, or more generally matrices of a given size, all come equipped with a notion of addition ...

We are now ready to define vector spaces. The idea is to observe that sets of column vectors, or row vectors, or more generally matrices of a given size, all come equipped with a notion of addition ...

Abstract In this paper, we introduce the concept of a weak q-distance and for this distance we derive a set-valued version of Ekeland's variational principle in the setting of uniform spaces. By using ...

…while it is quite interesting that the “K-theory” of Baez-Crans 2-vector bundles is K × K K \times K and that of Kapranov-Voevodsky is BDR-2K, the original hope was that there is a kind of 2-vector ...