Editing Substitution (section)

==Science and mathematics==
===Biology and chemistry===
*[[Base-pair substitution]] or point mutation, a type of mutation
*[[Substitution reaction]], where a functional group in a chemical compound is replaced by another group
**[[Substituent]], the atom or atoms that replaces those of the reactant
*Substitution, a process in which an allele arises and undergoes [[fixation (population genetics)|fixation]]

===Mathematics and computing===
*[[Substitution (algebra)]], replacing occurrences of some symbol by a given value
*[[Substitution (logic)]], a syntactic transformation on strings of symbols of a formal language
*[[String substitution]], a mapping of letters in an alphabet to languages
* Substitution of a character in a string, one of the single-character edits used to define the [[Levenshtein distance]]
*[[Substitution cipher]], a method of encryption
*[[Integration by substitution]], a method for finding antiderivatives and integrals

===Other uses in science===
*[[Substitution (economics)]], switching between alternative consumable goods as their relative prices change
*[[Attribute substitution]], a psychological process thought to underlie a number of cognitive biases and perceptual illusions
*[[Substitution method]], a method of measuring the transmission loss of an optical fiber