section_path: Exact definition of information and digital application
section_name: Exact definition of information and digital application
paragraph_text: Exact definition of information and digital application
  
  Information can be defined exactly by set theory:
  
  "Information is a selection from the domain of information".
  
  The "domain of information" is a set that the sender and receiver of information must know before exchanging information. Digital information, for example, consists of building blocks that are all number sequences. Each number sequence represents a selection from its domain. The sender and receiver of digital information (number sequences) must know the domain and binary format of each number sequence before exchanging information.By defining number sequences online, this would be systematically and universally usable. Before the exchanged digital number sequence, an efficient unique link to its online definition can be set. This online-defined digital information (number sequence) would be globally comparable and globally searchable.