• English only

# Differences

This shows you the differences between two versions of the page.

sav08:classical_decision_problem [2008/04/02 23:58]
vkuncak
sav08:classical_decision_problem [2008/04/03 13:34] (current)
vkuncak
Line 7: Line 7:
Classify formulas according to Classify formulas according to
* regular expression describing the sequence of quantifiers (e.g. \$\exists^* \forall^*\$ means formulas \$\exists x_1. \ldots. \exists x_n. \forall y_1.\ldots \forall y_m. F\$ where \$F\$ is quantifier-free)   * regular expression describing the sequence of quantifiers (e.g. \$\exists^* \forall^*\$ means formulas \$\exists x_1. \ldots. \exists x_n. \forall y_1.\ldots \forall y_m. F\$ where \$F\$ is quantifier-free)
-  * number and arity of relation symbols +  * sequence of numbers ​of relation symbols ​for each arity
-  * number and arity of function symbols+  * sequence of numbers ​of function symbols ​for each arity
* presence or absence of equality in formulas   * presence or absence of equality in formulas