Redirect with .htaccess
A .htaccess (hypertext access) file is a directory-level configuration file that allows for decentralized management of web server configuration. Servers often use .htaccess to rewrite URLs. Rewrite Hostname
Year: 2020
Parse XML using SAX in Java
XML stands for eXtended Markup Language. SAX (Simple API for XML) is an event-based sequential access parser API for XML documents. SAX is an alternative to the DOM parser. The DOM parser operates on the document as a whole, whereas …
The Erdos-Rado Sunflower Lemma
A sunflower is a collection of sets such that all pairs have the same intersections. The sets are called petals, and the intersection is called the core of the sunflower. More precisely, we say a collection of non-empty sets \(S_1, …
Turing Machine
A Turing machine (TM) is a tuple \(M=(Q, \Sigma, \delta)\) where \(Q\) is a finite set of states, containing a start state \(q_0\), an accepting state \(q_{y}\), and a rejecting state \(q_{n}\). The states \(q_{y}\) and \(q_{n}\) are distinct. \(\Sigma\) …