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Ginzburg–Landau theory is an important tool in condensed matter physics research, describing the ordered phases of condensed matter, including the dynamics, elasticity, and thermodynamics of the condensed configurations. In this systematic introduction to Ginzberg–Landau theory, both common and topological excitations are considered on the same footing (including their thermodynamics and dynamical phenomena). The role of the topological versus energetic considerations is made clear. Required mathematics (symmetry, including lattice translation, topology, and perturbative techniques) are...

The first English translation of Li Bozhong's pioneering study An Early Modern Economy in China uses sophisticated analysis to reconstruct the GDP of the Yangzi Delta. In this innovative economic history, Li provides a basis for understanding the Delta's economy, an area of unprecedented growth in modern times. Using quantitative research Li carefully reconstructs the economies of the region, combining three methods for estimating GDP: output, income, and expenditure. The result reveals the structure and level of income and production in this highly commercialized and urbanized part of China,...