# Kernel (geometry)

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**Kernel (geometry)**as edited by DavidB4-bot (Talk | contribs) at 14:35, July 28, 2016. This URL is a permanent link to this version of this page.The **kernel** in geometry is the set of all points *a* such that for all points *b* inside a polygon *P*, the segment *ab* lies entirely within *P*.^{[1]}

In abstract algebra, the **kernel** of a function between two groups is the set of all members of the first which map to the identity of the second. Similarly, the **kernel** of a mapping in linear algebra from one vector space to another is the set of vectors mapped to the zero vector.