Torsion

The term torsion may refer the following:

In mathematics, measuring curvature of some sort:
- Torsion of curves
- Torsion tensor in differential geometry
- Analytic torsion (also called Ray-Singer torsion)
- Reidemeister torsion (also called R-torsion, Franz torsion, de Rham torsion)
- Whitehead torsion
The second is algebraic, relating to the set of elements that vanish (e. In Differential geometry, the notion of torsion is a manner of characterizing a twist or screw of a Moving frame around a curve In mathematics Reidermeister torsion (or R-torsion, or Reidemeister-Franz torsion) is a topological invariant of manifolds introduced by for 3-manifolds and generalized In mathematics Reidermeister torsion (or R-torsion, or Reidemeister-Franz torsion) is a topological invariant of manifolds introduced by for 3-manifolds and generalized In Mathematics, Whitehead torsion is an Invariant of an h- Cobordism in a Whitehead group that is important in Simple homotopy theory and Algebra is a branch of Mathematics concerning the study of structure, relation, and Quantity. g. , elements of finite order).
- Torsion (algebra)
- Tor functor

In medicine:
- Testicular torsion
- Bloat

In physics and engineering:
- Torsion (mechanics)
- Torsion coefficient
- Torsion pendulum
- Torsion spring or -bar
- Torsion field

In biology:
- Torsion (gastropod), a developmental feature of all gastropods

In Abstract algebra, the term torsion refers to a number of concepts related to elements of finite order in groups and to the failure of modules to be In higher Mathematics, the Tor functors of Homological algebra are the Derived functors of the Tensor product functor In testicular torsion the Spermatic cord that provides the blood supply to a Testicle is twisted cutting off the blood supply often causing Orchalgia. Bloat is a medical condition in which the Stomach becomes overstretched by excessive Gas content In Solid mechanics, torsion is the twisting of an object due to an applied Torque. A torsion spring is a spring that works by torsion or twisting that is a flexible elastic object that stores Mechanical energy when it is twisted A torsion spring is a spring that works by torsion or twisting that is a flexible elastic object that stores Mechanical energy when it is twisted A torsion spring is a spring that works by torsion or twisting that is a flexible elastic object that stores Mechanical energy when it is twisted Torsion field, also called axion field, spin field, spinor field, and microlepton field is a pseudoscientific concept loosely based on Torsion is a Gastropod Synapomorphy which occurs in all gastropods during Larval development

Dictionary

-noun

The act of turning or twisting, or the state of being twisted; the twisting or wrenching of a body by the exertion of a lateral force tending to turn one end or part of it about a longitudinal axis, while the other is held fast or turned in the opposite direction.
(mechanics) That force with which a thread, wire, or rod of any material, returns, or tends to return, to a state of rest after it has been twisted; torsibility.

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