Indirect reciprocity

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  • Dynamical systems theory in mathematical biology and environmental science has attracted much attention from many scientific fields as well as mathematics. For example, “chaos” is one of its typical topics. Recently the preservation of endangered species has become one of the most important issues in biology and environmental science, because of the recent rapid loss of biodiversity in the world. In this respect, permanence or persistence, new concepts in dynamical systems theory, seem important.

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  • To one who has been an eye-witness of the wonderful achievements of American medical science in the conquest of acute communicable and pestilential diseases in those regions of the earth where they were supposed to be impregnably entrenched, there is the strongest possible appeal in the present rapidly growing movement for the improvement of physical efficiency and the conquest of chronic diseases of the vital organs.

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  • This volume is the second of a series, the first of which is "THE SCIENCE OF GETTING RICH." As that book is intended solely for those who want money, so this is for those who want health, and who want a practical guide and handbook, not a philosophical treatise. It is an instructor in the use of the universal Principle of Life, and my effort has been to explain the way in so plain and simple a fashion that the reader, though he may have given no previous study to New Thought or metaphysics, may readily follow it to perfect health. While retaining all essentials,...

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  • Dynamical systems theory in mathematical biology and environmental science has attracted much attention from many scientific fields as well as mathematics. For example, “chaos” is one of its typical topics. Recently the preservation of endangered species has become one of the most important issues in biology and environmental science, because of the recent rapid loss of biodiversity in the world. In this respect, permanence or persistence, new concepts in dynamical systems theory, seem important.

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  • The mathematical sciences are part of everyday life. Modern communication, transportation, science, engineering, technol- ogy, medicine, manufacturing, security, and finance all depend on the mathematical sciences, which consist of mathematics, statistics, operations research, and theoretical computer science. In addition, there are very mathematical people working in theoretical areas of most fields of science and engineering who also contribute to the mathematical sciences.

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  • XVII. INDIRECT EXCHANGE 1. Media of Exchange and Money INTERPERSONAL exchange is called indirect exchange if, between the commod-mities and services the reciprocal exchange of which is the ultimate end of exchanging, one or several media of exchange are interposed.

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