Transposition

Transposition may refer to:

Logic and mathematics

 * Transposition (mathematics), a permutation which exchanges two elements and keeps all others fixed
 * Transposition, producing the transpose of a matrix AT, which is computed by swapping columns for rows in the matrix A
 * Transpose of a linear map
 * Transposition (logic), a rule of replacement in philosophical logic
 * Transpose relation, another name for converse relation

Games

 * Transposition (chess), different moves or a different move order leading to the same position, especially during the openings
 * Transposition table, used in computer games to speed up the search of the game tree

Biology

 * Transposition (birth defect), a group of congenital defects involving an abnormal spatial arrangement of tissue or organ
 * Transposition of the great vessels, cardiac transposition, a congenital heart defect with malformation of any of the major vessels
 * Transposition of teeth
 * Penoscrotal transposition
 * Transposition (horizontal gene transfer), the transfer of genetic material between organisms other than by vertical gene transfer
 * Transposons, or genetic transposition, a mutation in which a chromosomal segment is transferred to a new position on the same or another chromosome

Other uses

 * Transposition (law), the incorporation of the provisions of a European Union directive into a Member State's domestic law
 * Transposition (music), moving a note or collection of notes up or down in pitch by a constant number of semitones
 * Transposition (transmission lines), periodic swapping of positions of the conductors of a transmission line
 * Transposition cipher, an elementary cryptographic operation
 * Transposition, docking, and extraction an orbital maneuver performed on the Apollo lunar missions
 * Transposition, sleight of hand (magic), a performer appears to make two different objects ([usually] coins or cards) switch places with one another faster than physically possible.
 * Transpose, a database of academic journal preprinting policies maintained by ASAPbio