3 Mar 2004
CS 3243 - Chapter 8
16
Using FOL
n
The kinship domain:
n
Brothers are siblings
¡
"
x,y
Brother(x,y)
Þ
Sibling(x,y)
n
One's mother is one's female parent
¡
"
m,c
Mother(c)
= m
Û
(Female(m)
Ù
Parent(m,c))
n
“Sibling” is symmetric
¡
"
x,y
Sibling(x,y)
Û
Sibling(y,x)