Despite its ludic appearance, “The adventure Don Quixote had with a dead body” (part I, chapter XIX) is one of the most complex pieces Cervantes’ famous novel. In midst dark night, Manchegan knight errant confronts an otherwordly procession robed men carrying torches who transport “knight” on bier. attacks them to “avenge” mysterious man, discovering they were priests secretly taking body from ...

In this paper, we continue the study of domino-tilings of Aztec diamonds. In particular, we look at certain ways of placing ``barriers'' in the Aztec diamond, with the constraint that no domino may cross a barrier. Remarkably, the number of constrained tilings is independent of the placement of the barriers. We do not know of a simple combinatorial explanation of this fact; our proof uses the J...

Background Position emission tomography (PET) imaging and cerebrospinal fluid (CSF) analysis are the gold standards for evaluating brain amyloidosis in vivo, but their utility is limited by invasive procedures, high costs of PET, accessibility to PET facilities. Prior research has used machine learning assess based on non-invasive easily accessible information such as cognitive test scores gene...