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Which of the following mappings are homomorphisms? Monomorphisms? Epimorphisms? Isomorphisms? a) G= (R-(0), .), H= (R+,-); φ:

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ANSWE R deosdy φ is surJective becaue it ho.ky value d is not injective becausc4c2)-( z, 22- uros getting ore num bea2CCodomtua) getig same inoge so not injective cleasy thir map it suajectiue berause fo each sea oe will get a po lynoma/ Hence

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