We introduce a new condition allowing to get a weak Harnack inequality for non-negative solutions to linear second order degenerate elliptic equations of X-elliptic type. Roughly speaking, our condition requires that the Euclidean balls of small radius are representable by means of X-controllable almost exponential maps.

A control condition for a weak Harnack inequality

KOGOJ, ALESSIA ELISABETTA
2012

Abstract

We introduce a new condition allowing to get a weak Harnack inequality for non-negative solutions to linear second order degenerate elliptic equations of X-elliptic type. Roughly speaking, our condition requires that the Euclidean balls of small radius are representable by means of X-controllable almost exponential maps.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11576/2642995
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