Substitution

Substitution may refer to:

Arts and media

Chord substitution, swapping one chord for a related one within a chord progression
Tritone substitution, reinterpreting a chord via a new root note located an augmented fourth or diminished fifth distant from the root of the original interpretation
"Substitution" (Silversun Pickups song), a 2009 song by Silversun Pickups
"Substitution" (Purple Disco Machine and Kungs song), a 2023 song by Purple Disco Machine and Kungs

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

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

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

Substitution (law), the replacement of a judge
Substitution (sport), where a sports team is able to change one player for another during a match
Substitution therapy or opiate replacement therapy
Import substitution industrialization, a trade and economic policy
Penal substitution, a theory of the atonement within Christian theology
Simultaneous substitution, a practice requiring Canadian television distribution companies to substitute a non-local station signal with the local signal

Help:Substitution, help performing substitution on Wikipedia pages
Special:ExpandTemplates, page that shows what will result from substitution
Wikipedia:Substitution, where, when, how, and what about using substitution on Wikipedia