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Articles
 
Asymptotic approximation of exponential integrals  
A collection of theorems and proofs on leading order approximations of exponential integrals, based on Laplace's method.
The narrow escape problem  
An introduction to the narrow escape problem for Brownian particles from a perturbation analysis point of view.
Regularly perturbed matrix eigenvalue problems  
An introduction to regularly perturbed matrix eigenvalue problems and leading order approximations.