The fundamental group scheme of a non-reduced scheme
β Scribed by Marco Antei
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- French
- Weight
- 113 KB
- Volume
- 135
- Category
- Article
- ISSN
- 0007-4497
No coin nor oath required. For personal study only.
β¦ Synopsis
We extend the definition of fundamental group scheme to non-reduced schemes over any connected Dedekind scheme. Then we compare the fundamental group scheme of an affine scheme with that of its reduced part.
π SIMILAR VOLUMES
Let X be a smooth projective variety defined over a perfect field k of positive characteristic, and let F X be the absolute Frobenius morphism of X. For any vector bundle E -β X, and any polynomial g with non-negative integer coefficients, define the vector bundle g(E) using the powers of F X and th
## Introduction Let V be a set, and call the elements of V voters or players. A subset A V is called a coalition. The compliment V&A of a coalition A is denoted A . A set of coalitions S is a game if all supersets of winning coalitions are winning as well. A coalition A V is said to be blocking (