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  2. Rigid transformation - Wikipedia

    en.wikipedia.org/wiki/Rigid_transformation

    Any object will keep the same shape and size after a proper rigid transformation. All rigid transformations are examples of affine transformations. The set of all (proper and improper) rigid transformations is a mathematical group called the Euclidean group, denoted E(n) for n-dimensional Euclidean spaces. The set of rigid motions is called the ...

  3. Rigidity (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Rigidity_(mathematics)

    In mathematics, a rigid collection C of mathematical objects (for instance sets or functions) is one in which every c ∈ C is uniquely determined by less information about c than one would expect. The above statement does not define a mathematical property ; instead, it describes in what sense the adjective "rigid" is typically used in ...

  4. Geometric rigidity - Wikipedia

    en.wikipedia.org/wiki/Geometric_rigidity

    The information in this section can be found in. [1] The rigidity matrix can be viewed as a linear transformation from | | to | |.The domain of this transformation is the set of | | column vectors, called velocity or displacements vectors, denoted by ′, and the image is the set of | | edge distortion vectors, denoted by ′.

  5. Screw theory - Wikipedia

    en.wikipedia.org/wiki/Screw_theory

    A common example of a screw is the wrench associated with a force acting on a rigid body ... into this equation to obtain, = ... In transformation geometry, ...

  6. Dual quaternion - Wikipedia

    en.wikipedia.org/wiki/Dual_quaternion

    In mechanics, the dual quaternions are applied as a number system to represent rigid transformations in three dimensions. [1] Since the space of dual quaternions is 8-dimensional and a rigid transformation has six real degrees of freedom, three for translations and three for rotations, dual quaternions obeying two algebraic constraints are used ...

  7. Isometry - Wikipedia

    en.wikipedia.org/wiki/Isometry

    Translation T is a direct isometry: a rigid motion. [1] In mathematics, an isometry (or congruence, or congruent transformation) is a distance-preserving transformation between metric spaces, usually assumed to be bijective. [a] The word isometry is derived from the Ancient Greek: ἴσος isos meaning "equal", and μέτρον metron meaning ...

  8. Kinematics - Wikipedia

    en.wikipedia.org/wiki/Kinematics

    These transformations can cause the displacement of the triangle in the plane, while leaving the vertex angle and the distances between vertices unchanged. Kinematics is often described as applied geometry, where the movement of a mechanical system is described using the rigid transformations of Euclidean geometry.

  9. Kinematic chain - Wikipedia

    en.wikipedia.org/wiki/Kinematic_chain

    The constraint equations for a kinematic chain are obtained using rigid transformations [Z] to characterize the relative movement allowed at each joint and separate rigid transformations [X] to define the dimensions of each link. In the case of a serial open chain, the result is a sequence of rigid transformations alternating joint and link ...