In differential geometry, the notion of 'torsion' is a manner of characterizing a twist or screw theory of a moving frame around a curve. The torsion of curves, as it appears in the Frenet-Serret formulas, for instance, quantifies the twist of a curve about its tangent vector as the curve evolves In the geometry of surfaces, the geodesic... in differential geometry
The closely related concepts of Reidemeister torsion (also called R-torsion, Franz torsion, de Rham torsion) and analytic torsion (also called Ray-Singer torsion)
We can assign to a homotopy equivalence of finite CW-complexes its Whitehead torsion which is an element in the Whitehead group .The Whitehead torsion is important in surgery theory....
In higher mathematics, the Tor functors of homological algebra are the derived functors of the tensor product functor. They were first defined in generality to express the K?nneth theorem and universal coefficient theorem in algebraic topology....
In testicular torsion the spermatic cord that provides the blood supply to a testicle is twisted, cutting off the blood supply, often causing orchialgia....
Bloat is a medical condition in which the stomach becomes overstretched by excessive gas content. It is also commonly referred to as torsion, gastric torsion, and gastric dilatation-volvulus when the stomach is also twisted....
In solid mechanics, torsion is the twisting of an object due to an applied torque. In circular sections, the resultant shear stress is perpendicular to the radius....
A torsion spring is a spring that works by Torsion or twisting; that is, a flexible Elasticity object that stores mechanical energy when it is twisted.... or -bar
Torsion field, also called axion field, spin field, spinor field, and microlepton field is a pseudoscientific concept loosely based on Einstein-Cartan theory and some unorthodox solutions of Maxwell's equations....
Torsion is a gastropod synapomorphy which occurs in all gastropods during larval development. Torsion is the rotation of the Viscus, Mantle and Gastropod shell 180? with respect to the head and foot of the gastropod.... , a developmental feature of all gastropods
