i have a Armstrong's axioms related question
Posted by: Junaid Najeeb
Date: September 23, 2010 12:55PM

how can i prove Decomposition rule
If X \to YZ then X \to Y and X \to Z

i need to prove it using the 3 Armstrong's axioms which are:

Axiom of reflexivity
If Y subset X, then X \to Y

Axiom of augmentation
If X \to Y, then XZ \to YZ for any Z

Axiom of transitivity
If X \to Y and Y \to Z , then X \to Z

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