scholarly journals Riesz Means of Dirichlet Eigenvalues for the Sub-Laplace Operator on the Engel Group

2013 ◽  
Vol 03 (09) ◽  
pp. 1-7
Author(s):  
Jingjing Xue
2007 ◽  
Vol 10 ◽  
pp. 341-353 ◽  
Author(s):  
Michael Vaughan-Lee
Keyword(s):  

In this note, the author proves that a group G is a 4-Engel group if and only if the normal closure of every element g ∈ G is a 3-Engel group


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