**Yoshifumi Tsuchimoto**

- Introduction
- Plan
- Notations and conventions
- Guiding problems
- Finite fields

- Uncertainty principle

- Representations of Weyl algebras of positive characteristics
- differential operators in positive characteristics
- irreducible representations of the Weyl algebras
- Schur's lemma

- ``Universal representation" of Weyl algebras and derivations

- Bibliography
- About this document ...

2007-04-20