Brown, Lawrence DDasGupta, AnirbanHaff, Leonard RStrawderman, William E2023-05-232023-05-232006-07-012016-07-01https://repository.upenn.edu/handle/20.500.14332/47980This article presents two expectation identities and a series of applications. One of the identities uses the heat equation, and we show that in some families of distributions the identity characterizes the normal distribution. We also show that it is essentially equivalent to Stein's identity. The applications we have presented are of a broad range. They include exact formulas and bounds for moments, an improvement and a reversal of Jensen's inequality, linking unbiased estimation to elliptic partial differential equations, applications to decision theory and Bayesian statistics, and an application to counting matchings in graph theory. Some examples are also given.© 2006. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.Bayes riskharmonicheat equationinadmissibilitymatching polynomialStein's identityunbiasedApplied MathematicsStatistics and ProbabilityArticle