A parse tree or parsing tree or derivation tree or concrete syntax tree is an ordered, rooted tree that represents the syntactic structure of a string according to some context-free grammar. The term parse tree itself is used primarily in computational linguistics; in theoretical syntax, the term syntax tree is more common. Parse trees concretely reflect the syntax of the input language, making them distinct from the abstract syntax trees used in computer programming. Unlike Reed-Kellogg sentence diagrams used for teaching grammar, parse trees do not use distinct symbol shapes for different types...

In linguistics, syntax () is the set of rules, principles, and processes that govern the structure of sentences in a given language, specifically word order and punctuation. The term syntax is also used to refer to the study of such principles and processes. The goal of many syntacticians is to discover the syntactic rules common to all languages. In mathematics, syntax refers to the rules governing the behavior of mathematical systems, such as formal languages used in logic. (See logical syntax.) == Etymology == The word syntax comes from Ancient Greek: σύνταξις "coordination", which consists...

A parse tree or parsing tree or derivation tree or concrete syntax tree is an ordered, rooted tree that represents the syntactic structure of a string according to some context-free grammar. The term parse tree itself is used primarily in computational linguistics; in theoretical syntax, the term syntax tree is more common. Parse trees concretely reflect the syntax of the input language, making them distinct from the abstract syntax trees used in computer programming. Unlike Reed-Kellogg sentence diagrams used for teaching grammar, parse trees do not use distinct symbol shapes for different types...

The Vedic period (or Vedic age) (c. 1500 – c. 500 BCE) in Northern India at the Ganges bassin, has been named after the period in Indian history in Iron Age India during which the Vedas, the oldest scriptures of Hinduism, were composed. As described by the Indo-Aryan migration theory, during the early part of the Vedic period the Indo-Aryans settled into northern India, bringing with them their specific religious traditions. The associated culture (sometimes referred to as Vedic civilisation) was initially a tribal, pastoral society centred in the northwestern parts of the Indian subcontinent;...