Nonlinear Eigenvalues and Analytic-Hypoellipticity(Memoirs of the American Mathematical Society)

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作      者
出版时间
1998年06月30日
装      帧
ISBN
9780821807842
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页      码
92
开      本
26 cm
语      种
英文
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图书简介
This work studies the failure of analytic-hypoellipticity (AH) of two partial differential operators. The operators studied are sums of squares of real analytic vector fields and satisfy Hormander?s condition; a condition on the rank of the Lie algebra generated by the brackets of the vector fields. These operators are necessarily (C^infty)-hypoelliptic. By reducing to an ordinary differential operator, the author shows the existence of nonlinear eigenvalues, which is used to disprove analytic-hypoellipticity of the original operators.
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