What is Inverse (mathematics)?
'''Inversion''' (or '''finding the inverse''') is an idea from [[mathematics]], which is about finding a number, function or mathematical structure which is different from the current one, but which has similar properties. The simplest case of this is negation: Given a [[positive number]], find the [[negative number]] which has the same value, except for the sign. Inversion can refer to the following concepts: *The [[inverse element]] for addition or for multiplication. *An [[inverse function]] *[[Inverse (logic)]] *The inversion of an [[Invertible matrix]] *The [[Fourier inversion theorem]] states that sometimes, it is possible to reconstruct the original function, after a [[Fourier transform]] *In [[Set theory]], the [[Complement (set theory)|complement]] will return all elements not in the set. *[[Inversive geometry]] studies the properties of a shape that are preserved after geometrical inversion. {{disambiguation}}