1. Introduction 2. The p-adic numbers Q_p 3. Some classical analysis on Q_p 4. Analytic functions on Z_p 5. Arithmetic differential operators on Z_p 6. A general view of arithmetic differential operators 7. Analyticity of arithmetic differential operators 8. Characteristic functions: standard p-adic coordinates 9. Characteristic functions: harmonic arithmetic coordinates 10. Differences between arithmetic differential operators over Z_p and Z_p^{unr} References.
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