# Torsion

Look up in Wiktionary, the free dictionary.torsion |

**Torsion** may refer to:

## Mathematics

- Torsion of a curve
- Torsion tensor in differential geometry
- Torsion (algebra)
- Torsion group in group theory and arithmetic geometry
- Tor functor
- Torsion-free module
- Reidemeister torsion (also called R-torsion, Franz torsion, de Rham torsion) and analytic torsion (also called Ray-Singer torsion)
- Whitehead torsion

## Chemistry

## Medicine

- Of bones, "torsion fracture" is another term for spiral fracture.
- Of organs, torsion refers to twisting, in particular twisting that interrupts the blood supply to that organ, e.g. splenic torsion, ovarian torsion, or testicular torsion.
- Torsion of the digestive tract in some domestic animals:
- A type of horse colic
- A complication of gastric dilatation volvulus (gastric torsion)

## Physics and engineering

- Torsion (mechanics)
- The field used in Einstein–Cartan theory and other alternatives to general relativity that involve torsion of spacetime

## Pseudoscience

- Torsion field (pseudoscience), a field alleged to make faster-than-light communication and paranormal phenomena possible

This article is issued from
Wikipedia.
The text is licensed under Creative
Commons - Attribution - Sharealike.
Additional terms may apply for the media files.