8. (10 points) Consider the general linear group GL(2,26) = {© a) | where a, b,...
(h) Show that the affine group AGL(1,q) is isomorphic to a subgroup of GL(2,9), the general linear group of non-singular matrices over GF(q), by using the mapping ax + b (Why is this an isomorphism?) [10] (8 h
problem 4a in worksheet 2 11. Recall from problem 4a on Algebra Problem Sheet 2 that the general linear group GL2(R) is the set of 2 x 2 matrices ahwhere a, b,c,d are real numbers such that ad be 0 under matrix multiplication, which is defined by (a) Prove that the set H-( [劙 adメ0} is a subgroup of GL2(R). (b) Let A = 1] and B-| 의 히 . Show that ord (A)-3, ord (B) = , and ord...
2 (2+2+1 marks) Consider the function GL(2,R-R A det A a) Prove that f is a surjective homomorphism. b) Verify that N-AL()dAE Ois a nomal subgroup of GL(2.R) GL(2.Ra group? a group? If so, with what operation? c) Is 2 (2+2+1 marks) Consider the function GL(2,R-R A det A a) Prove that f is a surjective homomorphism. b) Verify that N-AL()dAE Ois a nomal subgroup of GL(2.R) GL(2.Ra group? a group? If so, with what operation? c) Is
We know that |S5| = 120 = 8 × 15, so a Sylow 2-subgroup of S5 has order 8. (a) Find an example of a Sylow 2-subgroup of S5. (b) Is this Sylow subgroup abelian? (c) Can you identify this Sylow subgroup with some other well known group of order 8? (d) Calculate n2(S5).
4 Let G be an unknown group of order 8. By the First Sylow Theorem, G must contain a subgroup H of order 4 (a) If all subgroups of G of order 4 are isomorphic to V then what group must G be? Completely justify your answer. (b) Next, suppose that G has a subgroup H one of the following C Then G has a Cayley diagram like Find all possibilities for finishing the Cayley diagram. (c) Label each completed...
1- (2,5+2,5 mark) Consider in GL(2, Q), the subset (a=1 or a=-1),bez Prove that H, with multiplication, is a subgroup of GL(2,Q) a) Is the function b) an homomorphism of groups? Justify your answer 2 (3 marks) Let G be a group and a E G an element of order 12. Find the orders of each of the elements of (a) 3- (1+1,5 marks) Let G be a group such that any non-identity element has order 2. Prove that a)...
Abstract Algebra Answer both parts please. Exercise 3.6.2 Let F be a field and let F = FU {o0) ( where oo is just a symbol). An F-linear fractional transformation is a function T: given by ar +b T(z) = cr + d ac). Prove that the set where ad-be 0 and T(oo) a/c, while T(-d/c) = o0 (recall that in a field, a/c of all linear fractional transformations M(F) is a subgroup of Sym(F). Further prove that if we...
Exercise 4. Consider the permutation group S7. a. Show that the subgroup generated by the element (1,2,3,4,5,6) is a cyclic group of order 6. b. Show that the subgroup generated by the element (1,3, 4, 5, 6, 7) is a cyclic group of order 6. c. Show that the subgroup generated by the element (1,2,3) is a cyclic group of order 3. d. Show that the subgroup generated by the element (6, 7) is a cyclic group of order 2....
Let D4 be dihedral group order 8. So D4={e, a, a^2, a^3, b, ab, a^2b, a^3b}, a^4 = e, b^2= e, ab=ba^3; A. FIND ALL THE COSETS OF THE SUBGROUP H= , list their elements. B. What is the index [D4 : H] C. DETERMINE IF H IS NORMAL
GL(2, Z3) = {[a ] a, b,c,d € Zz, ad – bc = 0} What is the centralizer for at least three different elements in your group.