Since the pioneering work of Gerhard Grüss dating back to 1935, Grüss’s inequality and, more generally, Grüss-type bounds for covariances have fascinated researchers and found numerous applications in areas such as economics, insurance, reliability, and, more generally, decision making...

According to the recognition heuristic, people infer that an object they recognize has a higher value on a criterion of interest than an object they do not recognize. This model has been analyzed mathematically and conditions for the less-is-more effect -- where recognizing fewer objects...