Question
Let A, B and C be sets. Then (a) Prove or disprove (A C = B C) A=B (b) Prove or disprove (A C =
Let A, B and C be sets. Then
(a) Prove or disprove (A
C = B
C) 
A=B
(b) Prove or disprove (A
C = B
C) 
A=B
(c) Prove or disprove ((A
C = B
C)
(A
C = B
C)) 
A=B
(d) Prove or disprove ((A
C = B
C)
(A
C = B
C)) 
A=B
Please show all your work
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Concepts of Database Management
Authors: Philip J. Pratt, Mary Z. Last
8th edition
1285427106, 978-1285427102
