We write H char G if theta(h) in H for all h in H and theta in Aut(G).

How to find out the mirror image of a point?

Generators of a free group
If G is a free group generated by n elements, is it possible to find an isomorphism of G with a free group generated by n-1 (or any fewer number) of elements?

How many 3/4 Are in 1

Convert 10 meters to feet. Round your answer to the nearest tenth

6. Reduce the following matrix to reduced row echelon form:                                                                                                   

Let v be a vector over a field F with zero vector  0 and let s,T be a substance of V .then which of the following statements are false

Describe Aut(Zp), the automorphism group of the cyclic group Zp where p is prime. In particular find the order of this group. (Hint: A generator must map to another generator)

Let a and b belong to a ring R and let m be an integer. Prove that m(ab) = (ma)b = a(mb)