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单词 MicrolocalAnalysis
释义

microlocal analysis


In mathematical analysis, microlocal analysis is a term use to describe techniques developed from the 1950s onwards based on Fourier transformsMathworldPlanetmath related to the study of variable-coefficients-linear and nonlinear partial differential equations. This includes generalized functions, pseudo-differential operators, wave front sets, Fourier integral operators, and paradifferential operators.

The term microlocal implies localisation not just at a point, but in terms of cotangent space directions at a given point. This gains in importance on manifolds of dimensionPlanetmathPlanetmath greater than one.

This entry was adapted from the Wikipedia article http://en.wikipedia.org/wiki/Microlocal_analysisMicrolocal analysis as of January 17, 2007.

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