1. The fundamental Theorem of Arithmetic
2. Arithmetical Functions AND Dirichlet Multipliction
3. Averages A arithmetical functions
4. Some elementary theorems on the distribution of prime
5. Congruences
6. Finite Abelian groups and their characters
7. Dirichlet s theorem Primes in Arithmetic progrssion
8. Periodic Arithmetical functions and gauss sums
9. Quadratic Residues and the Quadratic reciprocity law
10. Primitive roots
11. Dirichtel series and Euler products
12. The functions
L(S,X)
13. Analytic proof of the prime number theorem
