8 lines
160 B
Plaintext
8 lines
160 B
Plaintext
|
Property T2 : : equal number of ('s and )'s
|
||
|
|
Some example ((p)()
|
||
|
|
Satisfies T2 but not T1
|
||
|
|
|
||
|
|
Definition of PIS : proper initial segment
|
||
|
|
Also called proper prefix.
|
||
|
|
|