Alg7.19
From Exampleproblems
Prove that a group of order 312 has a normal Sylow p-subgroup.
For p=13, 1 is the only number congruent to 1 mod 13 that divides 312, so the Sylow 13-subgroup is unique and therefore it is normal.
Prove that a group of order 312 has a normal Sylow p-subgroup.
For p=13, 1 is the only number congruent to 1 mod 13 that divides 312, so the Sylow 13-subgroup is unique and therefore it is normal.