The importance of the concept of form to logic was already recognized in ancient times. Aristotle, in the Prior Analytics, was probably the first to employ variable letters to represent valid … See more

To demonstrate the important notion of the form of an argument, substitute letters for similar items throughout the sentences in the original argument. See more

The fundamental difference between modern formal logic and traditional, or Aristotelian logic, lies in their differing analysis of the logical form of the sentences they treat: See more

• Argument map – Visual representation of the structure of an argument
• Logical fallacy – Faulty deductive reasoning due to a logical flaw
• Informal fallacy – Form of incorrect argument in natural language See more

Attention is given to argument and sentence form, because form is what makes an argument valid or cogent. All logical form … See more

In semantic parsing, statements in natural languages are converted into logical forms that represent their meanings. See more

• Richard Mark Sainsbury (2001). Logical forms: an introduction to philosophical logic. Wiley-Blackwell. ISBN 978-0-631-21679-7 See more