Question 1

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Pe M = (0,+∞) definim legea de compozitie: x space ring operator space y space equals space e to the power of ln left parenthesis x right parenthesis times ln left parenthesis y right parenthesis end exponent space.
C u p l u l space left parenthesis text (0, end text +∞ text ) end text comma space ring operator space right parenthesis space e s t e space m o n o i d space s i space U left parenthesis text (0, end text +∞ text ) end text right parenthesis space equals space text (0, end text +∞ text ) end text minus text { 1 } end text.

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