Logic programming that computational steps cannot be logically deduced. However, in concurrent logic programming, any result of a terminating computation is a logical consequence of the program, and any partial result of a partial computation is a logical consequence of the program and the residual goal (process network). Consequently, the indeterminacy of computations implies that not all logical consequences of the program can be deduced. Concurrent constraint logic programming combines concurrent logic programming and constraint logic programming, using constraints to control concurrency. A clause can contain a guard, which is a set of constraints that may block the applicability of the clause.
Resolution (logic) premises hold, then the conclusion formula_19 is true. Resolution rule can be generalized to first-order logic to: where formula_21 is a most general unifier of formula_22 and formula_23 and formula_24 and formula_25 have no common variables. The clauses formula_26 and formula_27 can apply this rule with formula_28 as unifier. Here x is a variable and b is a constant. Here we see that In first order logic, resolution condenses the traditional syllogisms of logical inference down to a single rule. To understand how resolution works, consider the following example syllogism of term logic: Or, more generally: To recast the reasoning