Incidence not known: 1  Abdominal or stomach pain. 2  bloating. 3  blurred vision. 4  change in vaginal discharge. 5  clay-colored stools. 6  cleft lip or palate. 7  confusion. 8  constipation. 9  darkened urine. 10  diarrhea. 11  difficult or labored breathing. 12  difficulty with swallowing. 13  difficulty with walking. 14  dizziness.
In abstract algebra, a normal subgroup is a subgroup which is invariant under conjugation by members of the group of which it is a part. In other words, a subgroup H of a group G is normal in G if and only if gH = Hg for all g in G, i.e., the sets of left and right cosets coincide.Normal subgroups (and only normal subgroups) can be used to construct quotient groups from a given group.n other words, a subgroup H of a group G is normal in G if and only if gH = Hg for all g in G, i.e., the sets of left and right cosets coincide.
A subgroup of a group can also be defined as another abstract group along with an injective homomorphism (or embedding) from that abstract group to the given group. Here, the other abstract group can be naturally identified via its image under the homomorphism, which is the subgroup in a more literal sense.