Hiroshi Ohta – författare

This is a Festschrift to honour Professor Melvin Greenhut who has long toiled on spatial economics. The book accordingly focuses on a single question: in what sense 'economic space' matters in economic theory. Space in economics is an elusive concept, apparently separating and embracing economic agents at the same time. This is why adding it to already overly complicated economic agents at the same time. This is why adding it to already overly complicated economic models may not necessarily help economics to become sufficiently realistic. In this book, leading scholars of international stature try to find ways of introducing space in economic theory which will make it simpler and more realistic, analysing theoretical and historical issues of contemporary relevance, such as land use, congestion and public goods, location theory and spatial competition.

A co-publication of the AMS and International Press of Boston, Inc.This is a two-volume series research monograph on the general Lagrangian Floer theory and on the accompanying homological algebra of filtered A?A?-algebras. This book provides the most important step towards a rigorous foundation of the Fukaya category in general context. In Volume I, general deformation theory of the Floer cohomology is developed in both algebraic and geometric contexts. An essentially self-contained homotopy theory of filtered A?A? algebras and A?A? bimodules and applications of their obstruction-deformation theory to the Lagrangian Floer theory are presented. Volume II contains detailed studies of two of the main points of the foundation of the theory: transversality and orientation. The study of transversality is based on the virtual fundamental chain techniques (the theory of Kuranishi structures and their multisections) and chain level intersection theories. A detailed analysis comparing the orientations of the moduli spaces and their fiber products is carried out. A self-contained account of the general theory of Kuranishi structures is also included in the appendix of this volume.

A co-publication of the AMS and International Press of Boston, Inc.This is a two-volume series research monograph on the general Lagrangian Floer theory and on the accompanying homological algebra of filtered A?A?-algebras. This book provides the most important step towards a rigorous foundation of the Fukaya category in general context. In Volume I, general deformation theory of the Floer cohomology is developed in both algebraic and geometric contexts. An essentially self-contained homotopy theory of filtered A?A? algebras and A?A? bimodules and applications of their obstruction-deformation theory to the Lagrangian Floer theory are presented. Volume II contains detailed studies of two of the main points of the foundation of the theory: transversality and orientation. The study of transversality is based on the virtual fundamental chain techniques (the theory of Kuranishi structures and their multisections) and chain level intersection theories. A detailed analysis comparing the orientations of the moduli spaces and their fiber products is carried out. A self-contained account of the general theory of Kuranishi structures is also included in the appendix of this volume.

This handbook offers an exposition of the contemporary status of Japan's environmental law, policy, and politics. The compass of ecological quandaries explored within this tome is expansive, encompassing issues pertinent to both natural and synthetic ecosystems, natural resources, and inorganic materials. Each chapter's temporal framework corresponds to the postwar period, following the enactment of environmental statutes and the initiation of administrative institutionalization, situated approximately in the early 1970s. The central inquiry addressed in this compendium pertains to the extent to which prevailing environmental statutes and policies have contributed to the enhancement or conservation of Japan's natural and synthetic ecosystems, as well as the resilience of its natural resources. The authors within this volume undertake an analysis to discern the causal factors behind the quandaries by ascribing them to the existence or absence of enforceable regulations, public involvement in policy formulation processes, bureaucratic fragmentation, pioneering regulatory measures, institutional obstacles, regulatory co-optation, rational cost-effective methodologies, scientific understanding, scientific communities, ecological commerce, environmental non-governmental organizations (NGOs), and holistic ecological plans and programs. Moreover, pertinent sections raise an inquiry concerning Japan's ecological diplomacy, inquiring whether Japan serves as a leader, bystander, or obstructionist.

This handbook offers an exposition of the contemporary status of Japan's environmental law, policy, and politics. The compass of ecological quandaries explored within this tome is expansive, encompassing issues pertinent to both natural and synthetic ecosystems, natural resources, and inorganic materials. Each chapter's temporal framework corresponds to the postwar period, following the enactment of environmental statutes and the initiation of administrative institutionalization, situated approximately in the early 1970s. The central inquiry addressed in this compendium pertains to the extent to which prevailing environmental statutes and policies have contributed to the enhancement or conservation of Japan's natural and synthetic ecosystems, as well as the resilience of its natural resources. The authors within this volume undertake an analysis to discern the causal factors behind the quandaries by ascribing them to the existence or absence of enforceable regulations, public involvement in policy formulation processes, bureaucratic fragmentation, pioneering regulatory measures, institutional obstacles, regulatory co-optation, rational cost-effective methodologies, scientific understanding, scientific communities, ecological commerce, environmental non-governmental organizations (NGOs), and holistic ecological plans and programs. Moreover, pertinent sections raise an inquiry concerning Japan's ecological diplomacy, inquiring whether Japan serves as a leader, bystander, or obstructionist.

This is a Festschrift to honour Professor Melvin Greenhut who has long toiled on spatial economics. The book accordingly focuses on a single question: in what sense ''economic space'' matters in economic theory. Space in economics is an elusive concept, apparently separating and embracing economic agents at the same time. This is why adding it to already overly complicated economic agents at the same time. This is why adding it to already overly complicated economic models may not necessarily help economics to become sufficiently realistic. In this book, leading scholars of international stature try to find ways of introducing space in economic theory which will make it simpler and more realistic, analysing theoretical and historical issues of contemporary relevance, such as land use, congestion and public goods, location theory and spatial competition.

This is a Festschrift to honour Professor Melvin Greenhut who has long toiled on spatial economics. The book accordingly focuses on a single question: in what sense 'economic space' matters in economic theory. Space in economics is an elusive concept, apparently separating and embracing economic agents at the same time. This is why adding it to already overly complicated economic agents at the same time. This is why adding it to already overly complicated economic models may not necessarily help economics to become sufficiently realistic. In this book, leading scholars of international stature try to find ways of introducing space in economic theory which will make it simpler and more realistic, analysing theoretical and historical issues of contemporary relevance, such as land use, congestion and public goods, location theory and spatial competition.

The Memoirs of the AMS is devoted to the publication of new research in all areas of pure and applied mathematics. The Memoirs is designed particularly to publish long papers of groups of cognate papers in book form, and is under the supervision of the Editorial Committee of the AMS journal Transactions of the American Mathematical Society. All papers are peer-reviewed.

Trade, Policy, and International Adjustments covers the theoretical issues, macroeconomics, and mathematical methods in the field of international economics. The book summarizes and illustrates the various contributions to the field of international economics. The text presents studies on the issues in international trade and commercial policies; voluntary export restrictions; application of a geometric technique to a multidimensional problem concerning the Stolper-Samuelson theorem; the symmetry theorem between tariffs and quotas in the context of a monetary economy under flexible exchange rates; and application of the Hopf bifurcation theory to the theory of international capital mobility. Economists, teachers, and students of economics will find the book very insightful.

This handbook offers an exposition of the contemporary status of Japan's environmental law, policy, and politics. The compass of ecological quandaries explored within this tome is expansive, encompassing issues pertinent to both natural and synthetic ecosystems, natural resources, and inorganic materials.

The package of Gromov’s pseudo-holomorphic curves is a major tool in global symplectic geometry and its applications, including mirror symmetry and Hamiltonian dynamics. The Kuranishi structure was introduced by two of the authors of the present volume in the mid-1990s to apply this machinery on general symplectic manifolds without assuming any specific restrictions. It was further amplified by this book’s authors in their monograph Lagrangian Intersection Floer Theory and in many other publications of theirs and others. Answering popular demand, the authors now present the current book, in which they provide a detailed, self-contained explanation of the theory of Kuranishi structures.Part I discusses the theory on a single space equipped with Kuranishi structure, called a K-space, and its relevant basic package. First, the definition of a K-space and maps to the standard manifold are provided. Definitions are given for fiber products, differentialforms, partitions of unity, and the notion of CF-perturbations on the K-space. Then, using CF-perturbations, the authors define the integration on K-space and the push-forward of differential forms, and generalize Stokes' formula and Fubini's theorem in this framework. Also, “virtual fundamental class” is defined, and its cobordism invariance is proved.Part II discusses the (compatible) system of K-spaces and the process of going from “geometry” to “homological algebra”. Thorough explanations of the extension of given perturbations on the boundary to the interior are presented. Also explained is the process of taking the “homotopy limit” needed to handle a system of infinitely many moduli spaces. Having in mind the future application of these chain level constructions beyond those already known, an axiomatic approach is taken by listing the properties of the system of the relevant moduli spaces and then a self-contained account of the construction of the associated algebraic structures is given. This axiomatic approach makes the exposition contained here independent of previously published construction of relevant structures.

The package of Gromov’s pseudo-holomorphic curves is a major tool in global symplectic geometry and its applications, including mirror symmetry and Hamiltonian dynamics. The Kuranishi structure was introduced by two of the authors of the present volume in the mid-1990s to apply this machinery on general symplectic manifolds without assuming any specific restrictions. It was further amplified by this book’s authors in their monograph Lagrangian Intersection Floer Theory and in many other publications of theirs and others. Answering popular demand, the authors now present the current book, in which they provide a detailed, self-contained explanation of the theory of Kuranishi structures.Part I discusses the theory on a single space equipped with Kuranishi structure, called a K-space, and its relevant basic package. First, the definition of a K-space and maps to the standard manifold are provided. Definitions are given for fiber products, differentialforms, partitions of unity, and the notion of CF-perturbations on the K-space. Then, using CF-perturbations, the authors define the integration on K-space and the push-forward of differential forms, and generalize Stokes'' formula and Fubini''s theorem in this framework. Also, “virtual fundamental class” is defined, and its cobordism invariance is proved.Part II discusses the (compatible) system of K-spaces and the process of going from “geometry” to “homological algebra”. Thorough explanations of the extension of given perturbations on the boundary to the interior are presented. Also explained is the process of taking the “homotopy limit” needed to handle a system of infinitely many moduli spaces. Having in mind the future application of these chain level constructions beyond those already known, an axiomatic approach is taken by listing the properties of the system of the relevant moduli spaces and then a self-contained account of the construction of the associated algebraic structures is given. This axiomatic approach makes the exposition contained here independent of previously published construction of relevant structures.