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On the Liouville property for divergence form operators

Open Access article
 Printed: Jun 1998
  • Martin T. Barlow
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In this paper we construct a bounded strictly positive function $\sigma$ such that the Liouville property fails for the divergence form operator $L=\nabla (\sigma^2 \nabla)$. Since in addition $\Delta \sigma/\sigma$ is bounded, this example also gives a negative answer to a problem of Berestycki, Caffarelli and Nirenberg concerning linear Schr\"odinger operators.
MSC Classifications: 31C05, 60H10, 35J10 show english descriptions Harmonic, subharmonic, superharmonic functions
Stochastic ordinary differential equations [See also 34F05]
Schrodinger operator [See also 35Pxx]
31C05 - Harmonic, subharmonic, superharmonic functions
60H10 - Stochastic ordinary differential equations [See also 34F05]
35J10 - Schrodinger operator [See also 35Pxx]

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