TR01-074 | 12th October 2001 00:00
Linear and Negative Resolution are Weaker than Resolution
Abstract:
We prove exponential separations between the sizes of
particular refutations in negative, respectively linear, resolution and
general resolution. Only a superpolynomial separation between negative
and general resolution was previously known. Our examples show that there
is no strong relationship between the size and width of refutations in
negative and linear resolution.