MathOverflow will be down for maintenance for approximately 3 hours, starting Monday evening (06/24/2013) at approximately 9:00 PM Eastern time (UTC-4).

Helge

 2,266 Reputation 1659 views

Registered User

 Name Helge Member for 3 years Seen Jun 11 at 17:10 Website Location Age 28
 Jun11 comment Any possible way to invert a function built from a sum of two?Here's a general strategy. 1) Write as a power series around a single point $t$. 2) Invert this power series. There are "nice" expressions for 2). For 1) it depends on how you choose $t$. May23 accepted Eigenvalues of Symmetric Tridiagonal Matrices May23 comment Eigenvalues of Symmetric Tridiagonal MatricesNo. The proofs are simple enough that I don't know where they can be found. math.caltech.edu/Szego.html might contain these things. The main reason I'm hesitating posting a proof is that most proofs are heavy on notation, e.g. introduce orthogonal polynomials. May23 answered Eigenvalues of Symmetric Tridiagonal Matrices Feb13 awarded ● Yearling