The logic of information, or the logical theory of information, considers the information content of logical sign

Sign (semiotics)

A sign is understood as a discrete unit of meaning in semiotics. It is defined as "something that stands for something, to someone in some capacity" It includes words, images, gestures, scents, tastes, textures, sounds – essentially all of the ways in which information can be...

s and expressions along the lines initially developed by Charles Sanders Peirce. In this line of work, the concept of information serves to integrate the aspects of signs and expressions that are separately covered, on the one hand, by the concepts of denotation and extension

Extension (semantics)

In any of several studies that treat the use of signs - for example, in linguistics, logic, mathematics, semantics, and semiotics - the extension of a concept, idea, or sign consists of the things to which it applies, in contrast with its comprehension or intension, which consists very roughly of...

, and on the other hand, by the concepts of connotation and comprehension

Comprehension (logic)

In logic, the comprehension of an object is the totality of intensions, that is, attributes, characters, marks, properties, or qualities, that the object possesses, or else the totality of intensions that are pertinent to the context of a given discussion...

.

Peirce began to develop these ideas in his lectures "On the Logic of Science" at Harvard University

Harvard University

Harvard University is a private Ivy League university located in Cambridge, Massachusetts, United States, established in 1636 by the Massachusetts legislature. Harvard is the oldest institution of higher learning in the United States and the first corporation chartered in the country...

 (1865) and the Lowell Institute

Lowell Institute

The Lowell Institute is an educational foundation in Boston, Massachusetts, U.S.A., providing for free public lectures, and endowed by the bequest of $250,000 left by John Lowell, Jr., who died in 1836. Under the terms of his will 10% of the net income was to be added to the principal, which in...

 (1866).

See also

• Charles Sanders Peirce bibliography
  Charles Sanders Peirce bibliography
  This Charles Sanders Peirce bibliography consolidates numerous references to Charles Sanders Peirce's writings, including letters, manuscripts, publications, and Nachlass...
  
  
• Information theory
  Information theory
  Information theory is a branch of applied mathematics and electrical engineering involving the quantification of information. Information theory was developed by Claude E. Shannon to find fundamental limits on signal processing operations such as compressing data and on reliably storing and...
  
  
• Inquiry
  Inquiry
  An inquiry is any process that has the aim of augmenting knowledge, resolving doubt, or solving a problem. A theory of inquiry is an account of the various types of inquiry and a treatment of the ways that each type of inquiry achieves its aim.-Deduction:...
  
  
• Philosophy of information
  Philosophy of information
  The philosophy of information is the area of research that studies conceptual issues arising at the intersection of computer science, information technology, and philosophy.It includes:...
  
  
• Pragmatic maxim
  Pragmatic maxim
  The pragmatic maxim, also known as the maxim of pragmatism or the maxim of pragmaticism, is a maxim of logic formulated by Charles Sanders Peirce...
  
  
• Pragmatic theory of information
  Pragmatic theory of information
  The pragmatic theory of information is a set of concepts and principles for defining, measuring, and tracking the time evolution of information. PTOI is derived from Charles Sanders Peirce's general theory of signs and inquiry. Peirce explored a number of ideas about information throughout his...
  
  

• Pragmatic theory of truth
  Pragmatic theory of truth
  Pragmatic theory of truth refers to those accounts, definitions, and theories of the concept truth that distinguish the philosophies of pragmatism and pragmaticism...
  
  
• Pragmaticism
  Pragmaticism
  Pragmaticism is a term used by Charles Sanders Peirce for his pragmatic philosophy starting in 1905, in order to distance himself and it from pragmatism, the original name, which had been used in a manner he did not approve of in the "literary journals"...
  
  
• Pragmatism
  Pragmatism
  Pragmatism is a philosophical tradition centered on the linking of practice and theory. It describes a process where theory is extracted from practice, and applied back to practice to form what is called intelligent practice...
  
  
• Scientific method
  Scientific method
  Scientific method refers to a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. To be termed scientific, a method of inquiry must be based on gathering empirical and measurable evidence subject to specific principles of...
  
  
• Semeiotic
  Semeiotic
  Semeiotic is a spelling variant of a word used by Charles Sanders Peirce, likewise as "Semiotic," "Semiotics", and "Semeotic", to refer to his philosophical logic, which he cast as the study of signs, or semiotic. Some, not all, Peircean scholars have used "semeiotic" to refer to distinctly...
  
  
• Semiosis
  Semiosis
  Semiosis is any form of activity, conduct, or process that involves signs, including the production of meaning. Briefly – semiosis is sign process...
  
  

• Semiotics
  Semiotics
  Semiotics, also called semiotic studies or semiology, is the study of signs and sign processes , indication, designation, likeness, analogy, metaphor, symbolism, signification, and communication...
  
  
• Semiotic information theory
  Semiotic information theory
  Semiotic information theory considers the information content of signs and expressions as it is conceived within the semiotic or sign-relational framework developed by Charles Sanders Peirce.-Information and uncertainty:...
  
  
• Sign relation
  Sign relation
  A sign relation is the basic construct in the theory of signs, also known as semeiotic or semiotics, as developed by Charles Sanders Peirce.-Anthesis:...
  
  
• Sign relational complex
  Sign relational complex
  In semiotics, a sign relational complex is a generalization of a sign relation that allows for empty components in the elementary sign relations, or sign relational triples of the form ....
  
  
• Triadic relation
  Triadic relation
  In mathematics, a ternary relation or triadic relation is a finitary relation in which the number of places in the relation is three. Ternary relations may also be referred to as 3-adic, 3-ary, 3-dimensional, or 3-place....
  
  

External links

• Peirce, C.S. (1867), "Upon Logical Comprehension and Extension", Eprint