Substitution

Substitution may refer to:

Sciences

• Substitution reaction, where a functional group in a chemical compound is replaced by another group
• Substitution (logic), a syntactic transformation on strings of symbols of a formal language
• Substitution of variables
• Substitution cipher, a method of encryption
• String substitution, a mapping of letters in an alphabet to languages
• Substitution method, a method of measuring the transmission loss of a fiber
• Base-pair substitution or point mutation, a type of mutation
• Substitution, a process in which an allele arises and undergoes fixation

Other uses

• Substitution (law), the replacement of a judge
• Substitution (poetry), a variation in poetic scansion
• "Substitution" (song), a song by Silversun Pickups
• Substitution (sport), where a sports team is able to change one player for another during a match
• Substitution (theatre), an acting methodology

See also

• Substitute (disambiguation)
• Integration by substitution, a method for finding antiderivatives and integrals
• Substitution therapy or opiate replacement therapy
• Penal substitution, a theory of the atonement within Christian theology
• Chord substitution, the use of a chord in the place of another related chord
• Import substitution industrialization, a trade and economic policy
• Simultaneous substitution, a practice requiring Canadian television distribution companies to substitute a non-local station signal with the local signal