Published online by Cambridge University Press: 12 November 2018
We introduce an Almgren frequency function of the sub-$p$-Laplace equation on the Heisenberg group to establish a doubling estimate under the assumption that the frequency function is locally bounded. From this, we obtain some partial results on unique continuation for the sub-$p$-Laplace equation.
The first author was supported by the NSFC (Grant No. 11401310), the Qing Lan Project of Jiangsu Province and the overseas research program of Jiangsu Province. The second author was supported by the NSFC (Grant No. 11501292).