Tatsuo Kobayashi

The Land Reform in Japan

A fully-illustrated introduction to the archaeology of the Jomon period in Japan, this book explores the complex relationships between Jomon people and their rich natural environment. From the end of the last Ice Age 12,000 years ago to the appearance of rice agriculture around 400 BC, Jomon people subsisted by hunting, fishing and gathering; but abundant and predictable sources of wild food enabled Jomon people to live in large, relatively permanent settlements, and to develop an elaborate material culture. In this book Kobayashi and Kaner explore thematic issues in Jomon archaeology: the appearance of sedentism in the Japanese archipelago and the nature of Jomon settlements; the invention of pottery and the development and meaning of regional pottery styles; social and spiritual life; as well as the astronomical significance of causeway monuments and the conceptualisation of landscape in the Jomon period. These ideas are considered in the light of current work in the European Mesolithic and Neolithic, setting Jomon archaeology within a global context. The book draws extensively on new archaeological information from various parts of Japan, including the sites of Sannai Maruyama, Isedotai, Komankino among others. Extensive colour illustrations provide a vivid demonstration of Jomon ideology and creativity. Tatsuo Kobayashi is Professor of Archaeology at Kokugakuin University in Tokyo and Director of the Niigata Prefectural Museum of History. Simon Kraner is Assistant Director of the Sainsbury Institute for the Study of Japanese Arts and Cultures.

Forager Life and Culture in the Prehistoric Japanese Archipelago

Jomon Reflections

Hiroshi Ōki

Yusuke Shimizu

Morimitsu Tanimoto

Hiroshi Okada (Researcher in chemistry)

This lecture note provides a tutorial review of non-Abelian discrete groups and presents applications to particle physics where discrete symmetries constitute an important principle for model building. While Abelian discrete symmetries are often imposed in order to control couplings for particle physics--particularly model building beyond the standard model--non-Abelian discrete symmetries have been applied particularly to understand the three-generation flavor structure. The non-Abelian discrete symmetries are indeed considered to be the most attractive choice for a flavor sector: Model builders have tried to derive experimental values of quark and lepton masses, mixing angles and CP phases on the assumption of non-Abelian discrete flavor symmetries of quarks and leptons, yet lepton mixing has already been intensively discussed in this context as well. Possible origins of the non-Abelian discrete symmetry for flavors are another topic of interest, as they can arise from an underlying theory, e.g., the string theory or compactification via orbifolding as geometrical symmetries such as modular symmetries, thereby providing a possible bridge between the underlying theory and corresponding low-energy sector of particle physics. The book offers explicit introduction to the group theoretical aspects of many concrete groups, and readers learn how to derive conjugacy classes, characters, representations, tensor products, and automorphisms for these groups (with a finite number) when algebraic relations are given, thereby enabling readers to apply this to other groups of interest. Further, CP symmetry and modular symmetry are also presented.

An Introduction to Non-Abelian Discrete Symmetries for Particle Physicists

Hiroshi Okada

Hajime Ishimori

Hiroshi Ohki

These lecture notes provide a tutorial review of non-Abelian discrete groups and show some applications to issues in physics where discrete symmetries constitute an important principle for model building in particle physics. While Abelian discrete symmetries are often imposed in order to control couplings for particle physics - in particular model building beyond the standard model - non-Abelian discrete symmetries have been applied to understand the three-generation flavor structure in particular. Indeed, non-Abelian discrete symmetries are considered to be the most attractive choice for the flavor sector: model builders have tried to derive experimental values of quark and lepton masses, and mixing angles by assuming non-Abelian discrete flavor symmetries of quarks and leptons, yet, lepton mixing has already been intensively discussed in this context, as well. The possible origins of the non-Abelian discrete symmetry for flavors is another topic of interest, as they can arise from an underlying theory - e.g. the string theory or compactification via orbifolding – thereby providing a possible bridge between the underlying theory and the corresponding low-energy sector of particle physics. This text explicitly introduces and studies the group-theoretical aspects of many concrete groups and shows how to derive conjugacy classes, characters, representations, and tensor products for these groups (with a finite number) when algebraic relations are given, thereby enabling readers to apply this to other groups of interest.

Tatsuo Kobayashi

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