## Linear elasticity

Equations governing a **linear** elastic boundary value problem are based on three tensor partial differential equations for the balance of **linear** momentum and six infinitesimal strain - displacement relations. The systems of differential equations is completed by a set of **linear** algebraic

**wikipedia.org**| 2011/5/4 19:06:21

## Elastic modulus

An elastic modulus , or modulus of **elasticity** , is the mathematical description of an object or substance's tendency to be deformed elastically (i.e., non-permanently) when a force is applied to it. The elastic modulus of an object is defined as the slope of its stress-strain curve in the

**wikipedia.org**| 2011/5/15 0:27:43

## Clapeyron's theorem (elasticity)

In the **linear** theory of **elasticity** Clapeyron's theorem states that the potential energy of deformation of a body, which is in equilibrium under a given load, is equal to half the work done by the external forces computed assuming these forces had remained constant from the initial state

**wikipedia.org**| 2011/2/9 19:57:43

## Constant elasticity of substitution

In economics , Constant **elasticity** of substitution ( CES ) is a property of some production functions and utility functions . More precisely, it refers to a particular type of aggregator function which combines two or more types of consumption, or two or more types of productive inputs

**wikipedia.org**| 2011/3/16 0:09:04

## Mathematical economics

Francis Ysidro Edgeworth 2 Modern mathematical economics 2.1 Differential calculus 2.2 **Linear** models 2.2.1 Input-output economics 2.3 Mathematical optimization 2.3.1 **Linear** optimization 2.3.2 Nonlinear programming 2.4 Game theory 2.5 Agent-based computational

**wikipedia.org**| 2011/10/4 4:42:42

## Solid mechanics

Solid mechanics The study of the physics of continuous materials with a defined rest shape. **Elasticity** Describes materials that return to their rest shape after an applied stress . Plasticity Describes materials that permanently deform after a sufficient applied stress. Rheology

**wikipedia.org**| 2010/10/2 1:36:58

## Partial differential equation

such as the propagation of sound or heat , electrostatics , electrodynamics , fluid flow , and **elasticity** . Seemingly distinct physical phenomena may have identical mathematical formulations, and thus be governed by the same underlying dynamic. They find their generalization in stochastic

**wikipedia.org**| 2011/5/15 9:27:54

## Price elasticity of demand

incidence (or "burden") of a tax on that good. Various research methods are used to determine price **elasticity** , including test markets , analysis of historical sales data and conjoint analysis . Contents 1 Definition 1.1 Point-price **elasticity** 1.2 Arc **elasticity** 2 History

**wikipedia.org**| 2011/10/4 7:43:32

## Elasticity (physics)

In physics , **elasticity** (or stretchiness ) is the physical property of a material that returns to its original shape after the stress (e.g. external forces ) that made it deform or distort is removed. The relative amount of deformation is called the strain . The elastic regime is ]].

**wikipedia.org**| 2011/9/27 9:40:23