One of the most effective ways to stimulate students to enjoy intellectual efforts is the scientific competition. In 1894, the Hungarian Mathematical and Physical Society introduced a mathematical competition for high school students. Among the winners were Lipot Fejer, Alfred Haar, Todor Karman, Marcel Riesz, Gabor Szego, and many others who became world-famous scientists. The success of high school competitions led the Mathematical Society to found a college-level contest, named after Miklos Schweitzer. The problems of the Schweitzer contests are proposed and selected by the most prominent Hungarian mathematicians. This book collects the problems posed in contests between 1962 and 1991, which range from algebra, combinatorics, theory of functions, geometry, measure theory, number theory, operator theory, probability theory, and topology to set theory. Solutions are included. The Schweitzer competition is one of the most unique in the world. Experience shows that this competition helps identify research talents. This collection of problems and solutions in several fields in mathematics can serve as a guide for many undergraduates and young mathematicians. The large variety of research-level problems should interest more mature mathematicians and historians of mathematics as well.

*E-statistics provides powerful methods to deal with problems in multivariate inference and analysis *Methods are implemented in R, and readers can immediately apply them using the freely available energy package for R *The proposed book will provide an overview of the existing state-of-the-art in development of energy statistics and an overview of applications. *Background and literature review is valuable for anyone considering further research or application in energy statistics.

One of the most effective ways to stimulate students to enjoy intellectual efforts is the scientific competition. In 1894 the Hungarian Mathematical and Physical Society introduced a mathematical competition for high school students. The success of high school competitions led the Mathematical Society to found a college level contest, named after Miklos Schweitzer. The problems of the Schweitzer Contests are proposed and selected by the most prominent Hungarian mathematicians. This book collects the problems posed in the contests between 1962 and 1991 which range from algebra, combinatorics, theory of functions, geometry, measure theory, number theory, operator theory, probability theory, topology, to set theory. The second part contains the solutions. The Schweitzer competition is one of the most unique in the world. The experience shows that this competition helps to identify research talents. This collection of problems and solutions in several fields in mathematics can serve as a guide for many undergraduates and young mathematicians. The large variety of research level problems might be of interest for more mature mathematicians and historians of mathematics as well.