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This question already has an answer here:

It is a fact in Humphrey's book that subalgebras containing Engel algebras are self normalizing.

This was already asked here:

Help with proof in Humphreys (2)

But the accepted answer doesn't convince me. (I added a comment to the accepted answer that states my objection)

I d be glad if someone can help. Thank you


Answer of the duplicate question, does not convince me. Please leave the question few days open until I get a convincing answer and I will delete it myself as soon as that happens. Thanks in advance

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marked as duplicate by Dietrich Burde, Joshua Mundinger, Yanior Weg, Lee David Chung Lin, DMcMor Apr 22 at 4:16

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • $\begingroup$ Writing a comment at the old question is better than reposting the same question. $\endgroup$ – Dietrich Burde Apr 21 at 13:14
  • $\begingroup$ @DietrichBurde. I had to do so as I almost had 0% chance , someone would respond to me. Please leave the question few days open until I get a convincing answer and I will delete it myself as soon as that happens. Thanks in advance $\endgroup$ – Amr Apr 21 at 16:46

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