Скачать книгу - Molecular Symmetry and Group Theory



This substantially revised and expanded new edition of the bestselling textbook, addresses the difficulties that can arise with the mathematics that underpins the study of symmetry, and acknowledges that group theory can be a complex concept for students to grasp. Written in a clear, concise manner, the author introduces a series of programmes that help students learn at their own pace and enable to them understand the subject fully. Readers are taken through a series of carefully constructed exercises, designed to simplify the mathematics and give them a full understanding of how this relates to the chemistry. This second edition contains a new chapter on the projection operator method. This is used to calculate the form of the normal modes of vibration of a molecule and the normalised wave functions of hybrid orbitals or molecular orbitals. The features of this book include: * A concise, gentle introduction to symmetry and group theory * Takes a programmed learning approach * New material on projection operators, and the calcultaion of normal modes of vibration and normalised wave functions of orbitals This book is suitable for all students of chemistry taking a first course in symmetry and group theory.


Brazilian Jiu-Jitsu: Theory and Technique Brazilian Jiu-Jitsu: Theory and Technique

Автор: Gracie Renzo, Gracie Royler, Danaher John

Год издания: 

During the last decade, the martial arts world has looked to innovative mixed martial arts competitions such as the Ultimate Fighting Championship to determine which fighting style is the best. These contests have repeatedly shown the grappling style of martial arts, headed by Brazilian jiu-jitsu, to dominate. The Brazilian jiu-jitsu style stems from the premise, garnered from analysis of actual street fights, that the outcome of any fight is decided on the ground. While most martial arts deal only with the initial punching and kicking stages of combat, Brazilian jiu-jitsu concentrates on ground combat. This guide shows how to use Brazilian jiu-jitsu to increase combat effectiveness. Photographs and step-by-step instructions show how to master the techniques used in this exciting new form of combat. Renzo Gracie, a two-time world Abu Dhabi submission jiu-jitsu champion, two-time Brazilian national champion, World Combat champion, and Martial Arts Reality Superfight champion, teaches Brazilian jiu-jitsu at an elite martial arts academy. Royler Gracie has competed in the Black Belt ranks for 20 years, winning the world title four times and the Abu Dhabi world submission championship for two consecutive years. They live in New York City.


Theory and practical aspects of Internationa settlements. Economic cooperation Theory and practical aspects of Internationa settlements. Economic cooperation

Автор: Николай Камзин

Год издания: 

As part of the dynamics of international economic cooperation by the need for mutual settlement operations, so the problem of organization of settlements is an important place for the economically active subjects, especially in a globalized economic space in the functioning of transnational structures and scale of the export, import and international financial transactions. In agreeing on the order of calculations, the participants determined the form of payment in order to fulfill the financial obligations of the agreement – regulated by means of voluntary compliance through a credit institution liabilities, characterized by specific features on the order of transfer of funds to the account, a certain kind of settlement document, as well as office procedures. The source of payment relations is the need to have one contractor expressed in the appropriate disposition, the other in shortage. This relationship gives rise as a consequence of the relationship with the lending institution. Need to accession will intensify in the subjects of international payment relationship.


Stylistic analysis of a literary text. Theory and practice / Стилистический анализ художественного текста. Теория и практика Stylistic analysis of a literary text. Theory and practice / Стилистический анализ художественного текста. Теория и практика

Автор: Н. В. Александрович

Год издания: 



A treatise on mensuration both in theory and practice A treatise on mensuration both in theory and practice

Автор: Charles Hutton

Год издания: 

Полный вариант заголовка: «A treatise on mensuration : both in theory and practice / by Charles Hutton».


Mystery of the Dyatlov group death Mystery of the Dyatlov group death

Автор: Евгений Буянов

Год издания: 

The earlier version of this book published on the Internet literature sites in January 2009 was called «The mystery of Dyatlov’s accident». In August 2011 a «paper version» of the book, improved and revised, was issued in an edition of 3000 copies, with financial help of Nikolai Antonovich Rundkvist and his publishing house, Eltsin URFU (former USTU, UPI) and a fund «In memory of Dyatlov’s group» with active participation of an academician P. I. Bartolomey. We thank everyone for contribution to our book. According to a proposal of Bartolomey we changed a title of the book to «The mystery of Dyatlov’s group death» and its size was considerably cut by way of removal of some appendices (they can be found in the earlier edition). We also added several articles of other authors in order to «introduce different opinions» that existed before our book. This book edition – more full and correct – was created on the basis of new investigation facts and as a result of constant revision of the book during last years. The huge «inertia» of the investigation of Dyatlov’s group Tragedy let us to receive new proofs and data of its events and facts but we also reached a higher level of understanding of crucial reasons of accidents increase in tourism and mountaineering during solar activity peaks, and explored connection of this factor with other natural phenomena.