A DNF formula is a disjunction (OR) of clauses; a clause is a conjunction (AND) of literals; a literal is a variable or its negation. For example, \[ (x_1 \wedge x_2 \wedge \overline{x_3}) \vee (x_1 \wedge \overline{x_4}) \vee (x_3 \wedge …
JavaScript is a programming language typically implemented in web browsers to allow user interactions with the web page. In the HTML/CSS/JavaScript combination, HTML markups the content of a web page, CSS styles the presentation, and JavaScript controls the behavior. Some …
Currently, web user interfaces mainly use three technologies: HTML, CSS and JavaScript. They take care of the structure, presentation and behavior of web pages. A web user interface can be decomposed into three parts: structure, what are the contents and …
The probabilistic method is a non-constructive way of proving the existence of an object having certain property. The argument usually goes as follows: a randomly selected object has the desired property with probability strictly positive, thus there must exist an …