====== Numerator ======
----
====Description====
* ''Numerator'' gives the numerator of expression.
====Examples====
Extract numerator of a rational expression:
println Numerator >> '(x - 1)*(x - 2)/(x - 3)**2'.t
> (x-1)*(x-2)
====See also====
* Related guides: [[documentation:guide:applying_and_manipulating_transformations]], [[documentation:guide:list_of_transformations]]
* Related transformations: [[documentation:ref:Denominator]]
* JavaDocs: [[http://api.redberry.cc/redberry/1.1.9/java-api/cc/redberry/core/transformations/fractions/GetNumeratorTransformation.html| GetNumeratorTransformation]]
* Source code: [[https://bitbucket.org/redberry/redberry/src/tip/core/src/main/java/cc/redberry/core/transformations/fractions/GetNumeratorTransformation.java| GetNumeratorTransformation.java]]