Divisor Function!

For discussing Olympiad Level Number Theory problems
User avatar
Labib
Posts: 411
Joined: Thu Dec 09, 2010 10:58 pm
Location: Dhaka, Bangladesh.

Divisor Function!

Unread post by Labib » Fri Dec 17, 2010 12:03 am

Please someone help me understand the $Divisor function$ and $Sigma function$. The definition in Wiki is just too hard for me to understand. You can also suggest books on this topic.
Please Install $L^AT_EX$ fonts in your PC for better looking equations,
Learn how to write equations, and don't forget to read Forum Guide and Rules.


"When you have eliminated the impossible, whatever remains, however improbable, must be the truth." - Sherlock Holmes

tushar7
Posts: 101
Joined: Tue Dec 07, 2010 3:23 pm

Re: Divisor Function!

Unread post by tushar7 » Fri Dec 17, 2010 12:47 am

good question . i wanted to say the same thing .

Hasib
Posts: 238
Joined: Fri Dec 10, 2010 11:29 am
Location: খুলনা, বাংলাদেশ
Contact:

Re: Divisor Function!

Unread post by Hasib » Fri Dec 17, 2010 9:36 pm

Ye. I want to know too
A man is not finished when he's defeated, he's finished when he quits.

Dipan
Posts: 158
Joined: Wed Dec 08, 2010 5:36 pm

Re: Divisor Function!

Unread post by Dipan » Fri Dec 17, 2010 10:03 pm

I am also interested........

User avatar
Moon
Site Admin
Posts: 751
Joined: Tue Nov 02, 2010 7:52 pm
Location: Dhaka, Bangladesh
Contact:

Re: Divisor Function!

Unread post by Moon » Fri Dec 17, 2010 10:38 pm

Read 104 number theory problems. It's first 70 pages are good introduction to number theory for the beginners.
http://www.kmcbd.org/books
"Inspiration is needed in geometry, just as much as in poetry." -- Aleksandr Pushkin

Please install LaTeX fonts in your PC for better looking equations,
learn how to write equations, and don't forget to read Forum Guide and Rules.

User avatar
Masum
Posts: 592
Joined: Tue Dec 07, 2010 1:12 pm
Location: Dhaka,Bangladesh

Re: Divisor Function!

Unread post by Masum » Fri Dec 17, 2010 11:38 pm

I think you meant $\tau (n)$ and $\sigma (n)$.For these Moon's suggestion is appropaite
One one thing is neutral in the universe, that is $0$.

User avatar
Labib
Posts: 411
Joined: Thu Dec 09, 2010 10:58 pm
Location: Dhaka, Bangladesh.

Re: Divisor Function!

Unread post by Labib » Fri Dec 17, 2010 11:49 pm

Thnx moon vai, masum vai!! :)
Please Install $L^AT_EX$ fonts in your PC for better looking equations,
Learn how to write equations, and don't forget to read Forum Guide and Rules.


"When you have eliminated the impossible, whatever remains, however improbable, must be the truth." - Sherlock Holmes

tushar7
Posts: 101
Joined: Tue Dec 07, 2010 3:23 pm

Re: Divisor Function!

Unread post by tushar7 » Sat Dec 18, 2010 1:17 am

yap ..........thanks from me too ( irrelevant post !!)

User avatar
Masum
Posts: 592
Joined: Tue Dec 07, 2010 1:12 pm
Location: Dhaka,Bangladesh

Re: Divisor Function!

Unread post by Masum » Sun Dec 19, 2010 9:38 pm

Yes,there lies the cause of not using any reputation system,if so someone might rate you low and you would be sad :)
One one thing is neutral in the universe, that is $0$.

Post Reply