Math & Science ⇒ definition and theorems numbering per chapter

[singhofmpl]

I'm writing my PhD thesis.I'm facing some problem relating to incorporating definitions,theorems and examples numbering per chapter.
What I'm looking for is that
first definition in chapter 1 should be numbered as 1.1 and in chapter 2 it should be numbered as 2.1 and so on and same for theorems etc.

can you tell me what changes I must incorporate in the preamble of my latex code?
For the time being I'm using the following code in my preamble, but its numbering definition etc globally rather than chapter wise.
\newtheorem{theorem}{Theorem}
\newtheorem{definition}{Definition}
\newtheorem{example}{Example}
please help.

[Stefan Kottwitz]

Hi,

if you are using the amsmath package you could write

Code: Select all

\numberwithin{definition}{chapter}
\numberwithin{example}{chapter}
...

to achieve that.

Another package useful for this purpose is chngcntr.

Stefan