Recently we have found a couple of errors in our paper entitled An extension problem and trace Hardy inequality for the sub-Laplacian on $H$-type groups, Int. Math. Res. Not. IMRN (2020), no. 14, 4238–4294. They concern Propositions 3.12–3.13, and Theorem 1.5, Corollary 1.6 and Remark 4.10. The purpose of this corrigendum is to point out the errors and supply necessary modifications where it is applicable.

中文翻译：

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更正：H 型群上次拉普拉斯算子的扩展问题和追踪 Hardy 不等式

最近，我们在题为“扩展问题”的论文中发现了几个错误，并在 $H$ 类型群上追踪亚拉普拉斯算子的 Hardy 不等式，Int。数学。水库。不是。IMRN (2020), 没有。14, 4238–4294。它们涉及命题 3.12-3.13、定理 1.5、推论 1.6 和备注 4.10。本更正的目的是指出错误并在适用的情况下提供必要的修改。