.. _sec-theory:


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Theory and formulations
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This section includes some material on formulations and general theoretical backgrounds for Exudyn.
Note that the formulation of nodes, objects, markers, etc. is presented right at the subsection of each object, see Section :ref:`sec-item-reference-manual`\ .
Furthermore, the general notations are described in Section :ref:`sec-generalnotation`\  and an overview on the system assembly and system equations of motion is given in Section :ref:`sec-generalnotation`\ , solvers are described in Section :ref:`sec-solvers`\ .