Transposition
# 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 $A^T,$ 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
