Problems on Discrete Mathematics1 (Part I)
... correct. But, in general, we are not able to do so because the domain is usually an infinite set, and even worse, the domain can be uncountable, e.g., real numbers. To overcome this problem, we divide the domain into several categories and make sure that those categories cover the domain. Then we ex ...
... correct. But, in general, we are not able to do so because the domain is usually an infinite set, and even worse, the domain can be uncountable, e.g., real numbers. To overcome this problem, we divide the domain into several categories and make sure that those categories cover the domain. Then we ex ...
Truth Tables and Ohm`s Law
... AND: when two or more Boolean expressions are ANDed, both must be true for the combination to be true. OR: when two or more Boolean expressions are ORed, if either one or the other or both are true, then the combination is true. NOT: takes one Boolean expression and yields the opposite of it, true ...
... AND: when two or more Boolean expressions are ANDed, both must be true for the combination to be true. OR: when two or more Boolean expressions are ORed, if either one or the other or both are true, then the combination is true. NOT: takes one Boolean expression and yields the opposite of it, true ...
Deductive Databases with Universally Quantified Conditions
... Deductive databases were introduced over 30 years ago ([Gallaire and Minker 1978],[Gallaire, Minker, and Nicolas 1981],[Gallaire, Minker, and Nicolas 1984]). A deductive database (or sometimes referred to as DATALOG programs) consists of a set of facts that correspond to a relational database and a ...
... Deductive databases were introduced over 30 years ago ([Gallaire and Minker 1978],[Gallaire, Minker, and Nicolas 1981],[Gallaire, Minker, and Nicolas 1984]). A deductive database (or sometimes referred to as DATALOG programs) consists of a set of facts that correspond to a relational database and a ...