There are times when success doesn't make sense on a purely mathematical basis. (inc.com)
Dr. Harel is interested in taking the many insights gained by physicists and giving them a rigorous mathematical basis. (zuckerman-scholars.org)
I like the attention now being given to Dr. Miskolczi's calculations because if correct those calculations provide a sound mathematical basis for my own propositions. (wattsupwiththat.com)