1.#

P

Q

R

S

\((P \rightarrow Q)\)

\((R \rightarrow S)\)

\((P \rightarrow Q)\rightarrow(R \rightarrow S)\)

1

1

1

0

1

0

0

0

0

0

0

1

1

1

1

1

1

0

1

0

0

1

0

1

1

0

1

1

1

1

0

1

1

1

1

0

1

1

1

1

1

1

1

0

0

1

0

1

1

0

1

1

0

1

0

0

2.Closses Centrality#

download

Node

a

b

c

d

e

f

g

a

0

0

3

2

3

2

2

b

4

2

2

2

1

2

1

c

1

2

0

2

1

1

3

d

2

2

2

0

1

3

1

e

1

2

3

2

2

2

2

f

2

2

2

3

2

0

3

g

2

1

3

1

2

3

0