You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
6 lines
810 B
6 lines
810 B
\item \self In the following text fill the blanks with the missing word(s).
|
|
|
|
The Ackermann's reduction is used to reduce a formula $\phi_{in}$ in \rule{4cm}{.4pt} \rule{6cm}{.4pt} to a formula in \rule{5.5cm}{.4pt} \rule{4.5cm}{.4pt} that is equisatisfiable. Two formulas are equisatisfiable if \rule{10cm}{.4pt}.
|
|
The algorithm adds explicit constraints to the formula $\phi_{in}$ to enforce \rule{7cm}{.4pt}. These constraints say, that $\forall \bar{x} \forall \bar{y} \; (\bigwedge_i x_i = y_i) \imp $ \rule{2.5cm}{.4pt} $ ) $.
|
|
The resulting equisatisfiable formula consists of two parts and is of the form: $\phi_{out} := \phi_C \wedge \hat{\phi_{in}}$.
|
|
The right part of the formula $\hat{\phi_{in}}$ describes the flattening original formula in which we replace \rule{7cm}{.4pt} with \rule{5.5cm}{.4pt}.
|