Let [Formula: see text] be a Lie algebra crossed module. In this paper, we shall introduce a chain of crossed modules of [Formula: see text] and show that if [Formula:… Click to show full abstract
Let [Formula: see text] be a Lie algebra crossed module. In this paper, we shall introduce a chain of crossed modules of [Formula: see text] and show that if [Formula: see text] and [Formula: see text] are two isoclinic crossed modules, then [Formula: see text].
               
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