Closed sws697 closed 10 months ago
C is extraneous in BC → E since B → A,A → BC, then B → BC. Then B → E. Therefore, BC ∈ B+. Delete BC → E, add B → E.
C is extraneous in BC → E since B → A,A → BC, then B → BC. Then B → E. Therefore, BC ∈ B+. Delete BC → E, add B → E.