Write all the right and left cosets of h={-1,1} in the multiplicative group g={1,-1,i-i}
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Let H = {-1, 1} and group G = {1, -1, i, -i} under complex multiplication.
Right Cosets of H in G:
H(1) = H(-1) = H = {-1, 1},
H(i) = H(-i) = {-i, i}.
Left Cosets of H in G:
(1)H = (-1)H = H = {-1, 1},
(i)H = (-i)H = {-i, i}.
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