'''Noether's theorem''' is a central result in [[theoretical physics|theoretical]] [[physics]] that expresses the equivalence of two different properties of [[physical law]]s. It is named after the mathematicianearly [[Emmy20th Noethercentury]] of the earlymathematician [[20thEmmy centuryNoether]].
TwoNoether's aspectstheorem arerelates pairs of basic ideas of relatedphysics, one being the [[invariance]] of the form that thea physical law takes with respect to any (generalized) transformation that preserves the coordinate system (both spatial and temporal aspects taken into consideration), and the other being a [[conservation law]] of a physical quantity.