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Vijay Singh chauhan Asked a Question
September 20, 2020 1:26 pmpts 30 pts
  • IIT JAM
  • Mathematics (MA)

Check whether a group or not?

Check whether a group or not? what is it then monoid, semigroup, etc?
  • 1 Answer(s)
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  • Subhankar dhara
    this is not a group
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  • Piyush pachauri
    Identity element is not unique. Associativity holds.
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  • Piyush pachauri thankyou
    No. Look at the identity element , it does not exist.
    Likes(0) Reply(2)
    Vijay Singh chauhan
    if it was for +R or -R then we can say it has an identity element. am I right?
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