Existence of solutions for transversally elliptic left invariant differential operators on nilpotent Lie groups
Linda P. Rothschild (1983)
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Linda P. Rothschild (1983)
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We examine the asymptotic, or large-time, behaviour of the semigroup kernel associated with a finite sum of homogeneous subcoercive operators acting on a connected Lie group of polynomial growth. If the group is nilpotent we prove that the kernel is bounded by a convolution of two Gaussians whose orders correspond to the highest and lowest orders of the homogeneous subcoercive components of the generator. Moreover we establish precise asymptotic estimates on the difference of the kernel...
J. W. Jenkins (1979)
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D. Müller (1983)
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