# Besicovitch theorem

From Encyclopedia of Mathematics

The name might refer to:

- A covering theorem often used in measure theory (see Covering theorems (measure theory))
- A theorem characterizing the differentiation of Radon measures (see Differentiation of measures)
- A theorem characterizing $1$-dimensional unrectifiable sets through the measures of their projection, generalized by Federer to sets of any dimension (see Besicovitch-Federer projection theorem).

**How to Cite This Entry:**

Besicovitch theorem.

*Encyclopedia of Mathematics.*URL: http://encyclopediaofmath.org/index.php?title=Besicovitch_theorem&oldid=32320