(b) Page 146 #4, (a) (a) Any subgroup of index 2 is normal
Page 146 #4 completed
Page 146 #5
Page 146 #12
Page 147 #16
Page 147 #24, 33
Page 147 #34
(c), (d) Page 231 #14 (c) is to prove Parts (3) and (4) of Prop 1, P.226
remark An additional remark on (d)
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