Sec 1.1 - 1.3, 9/1/09

* Proof of the theorem 1.3 is little harder. And i am finding hard time in grasping the last part of the proof.
* The most interesting part is the " Fundamental Theorem of Arithmetic" which says every integer n except 0, +/-1is a product of primes. This prime factorization is unique i.e. the number of the factors is the same after reordering and relabeling.

ex. 28= 2*2*7 where 2 and 7 are prime numbers.
30=2*3*5 where 2,3 and 5 are prime numbers