# Transposition

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## transposition

[‚tranz·pə′zish·ən]
(communications)
Interchanging the relative positions of conductors at regular intervals along a transmission line to reduce cross talk.
(mathematics)
A permutation of a set of symbols which exchanges exactly two while leaving all others unaffected.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

## Transposition

in electrical engineering, a change in the relative position of the conductors of individual phases along the length of an overhead power line in order to reduce the undesirable influence of power lines on one another and on nearby communication lines. To make a transposition, an entire power line is arbitrarily divided into sections, the number of which is a multiple of the number of phases. In each successive section the phases change places, so that each phase eventually occupies the positions of the others. The length of a section is determined by the conditions for reliable operation of the power line, the cost of constructing the power line, and the requirements for balance of the power line’s currents and voltages; the balance increases as a result of the equalization of the inductances and capacitances of the power line’s phases in a transposition section. Transpositions are made on power lines that are over 100 km in length and have voltages of 110 or more kilovolts. A complete phase-transposition cycle covers a length of not more than 300 km.

### REFERENCE

Mel’nikov.N. A. Elektricheskie seti i sistemy. Moscow, 1975.

## Transposition

in mathematics, a permutation of the elements of a given set whereby two elements are interchanged. For example, 13452 is transformed into 53412 by a transposition that interchanges the elements 5 and 1. (SeePERMUTATION.)

## Transposition

in music, the transfer of all the notes of a composition to a designated lower or higher key. Transposition by any interval other than an octave results in a change of key. The purpose of transposition is to adapt musical compositions for performance to a higher or lower voice or to an instrument with a different range. Transposition may also facilitate reading by reducing the number of sharps and flats needed in notation.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Type I Esophageal Atresia with Transposition of Great Arteries on Prenatal Ultrasound, Magnetic Resonance Imaging, and Vascular Cast.
Transpositions where a letter at one end of a word can be moved to the other end to make a new word are quite common.
Laparoscopy-assisted left ovarian vein transposition to treat one case of posterior nutcracker syndrome.
At the end of 2016 Cyprus had 68 infringement cases open, 48 of which concern late transposition and the rest concern incorrect transposition and/or bad application of EU laws.
Bilaterally, a transposition was seen with respect to the maxillary first premolars and canines (Figure 1).
Schussler, "Isolated congenitally corrected transposition of the great arteries with dextroversion discovered incidentally in a patient with cocaine-induced acute myocardial infarction," Proceedings (Baylor University.
The etiology of transposition is unknown and the reason why a tooth deviates from its normal path of eruption is still obscure.
Evidence for relational control in research on transposition comes from the choices participants make on each test trial.
Skin fold advancement transposition flaps were used to close wounds created by excision of extensive squamous cell carcinoma, trauma, burns, abscess and bite wounds.
The spectrum of transposition of the great arteries: with specific reference to developmental anatomy of the conus.

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