The CIS program in Computational Science and Engineering (CSE) spans several dozen departments and research areas. The field is application-driven and involve s a mix of applied mathematics, numerical analysis, and computer science.
Ph.D. students at Cornell can minor in CSE. Requirements are flexible and the list of CSE field members who can serve as minor advisors is long.
The Cornell Theory Center (CTC) provides an essential resource for students.
CIS has received an IGERT award from the National Science Foundation making it possible to support a large contingent of Ph.D. students who work on complex nonlinear systems. 
A priority of the CSE program is the development of a coordinated curriculum that serves computationally-oriented graduate students throughout science and engineering.
related sites:
[ CIS :: Comp Sci :: Comp Bio :: Info Sci :: Applied Math :: CTC ]