Some Obvious Properties of FDs
A , A , A
1
2
n
B , B , B
1
2
m
A , A , A
1
2
n
1
Is equivalent to
B
A , A , A
1
2
n
2
B
A , A , A
1
2
n
m
B
A , A , A
1
2
n
i
A
Always holds.
Splitting rule
and
Combing rule
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