(thing) by Noether Fri Jul 21 2000 at 10:45:04
A Laurent polynomial in x (over a field k) is an expression of the form
a-nx-n+...+a0+a1x+...+amxm
where the coefficients ai lie in k. (You can take k to be the real numbers or complex numbers.)

For example, 10+5x, x-1, and x-2+3x2 are all Laurent polynomials.

They can be added and multiplied in just the way you expect (so that x.x-1=1) and the collection k[x,x-1] of all Laurent polynomials forms a commutative ring.

del.icio.us Facebook Digg StumbleUpon Reddit (I like it!) 1 C!
Y'know, if you log in, you can write something here, or contact authors directly on the site. Create a New User if you don't already have an account.