Recent content by blob100

Many authors and lecturers use the word approximate. It is not mathematically to say something is close to another... I'm wondering what is the definition of approximate.

Anyone would like to help me?: I started learning some mathematics in university. I would like to start learning by my own topology. Anyone have a name of a good intro. book in the area?

Factorials are defined on the natural numbers and zero.

Look, (n-1)!=n!/n right? So 0!=1!/1=1.

Your trying to solve a solved problem. There is a stronger theorem which says: Fermat's numbers are whole prime to each other. Which mean, there is no "d" divisor for two different fermat numbers.