Second, we study pattern avoidance in the more general context of permutations with restricted ascents and descents. We consider a question of Lewis regarding permutations that are the reading words ...

A picture, the old adage goes, is worth 1,000 words. But in science a diagram can describe things that transcend the written word. A single image can convey the simple underlying pattern hidden by ...

Authors: Bobby J.Stinebaugh, M.D., and William H.Austin, M.D. Author Info & Affiliations Published August 18, 1966 N Engl J Med 1966;275: 375 DOI: 10.1056/NEJM196608182750708 VOL. 275NO. 7 ...