class 27, Oct 19,2023
This commit is contained in:
parent
c495dfe79c
commit
1ce05fa9fe
|
@ -0,0 +1,8 @@
|
||||||
|
Applications of CT
|
||||||
|
|
||||||
|
-- class of structures which has finitely many elements is not
|
||||||
|
definable in FO with equality.
|
||||||
|
|
||||||
|
-- class of graphs G=(V,E,a,b) where there is a path from a to b is
|
||||||
|
not definable in FO with signature <{a,b},{},{R(,)}>
|
||||||
|
|
Loading…
Reference in New Issue