mollifier
Definition from Wiktionary, the free dictionary
English[edit]
Etymology[edit]
Noun[edit]
mollifier (plural mollifiers)
 One who mollifies.
 Lord Halifax
 […] the Lord Treasurer, who ever secretly feigned himself to be a Moderator and Mollifier of the Catholicks Afflictions […]
 Lord Halifax
 (mathematics) An "approximation to the identity", a smooth function with special properties, used in distribution theory to create sequences of smooth functions approximating nonsmooth (generalized) functions, via convolution.

2009, Notices of the American Mathematical Society^{[1]}, volume 56, number 6:
 I particularly remember how, at that time, I was using his mollifier method to study the zero density of Lfunctions and was stuck with something.
