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A note on linear derivates of measurable functions
Published online by Cambridge University Press: 24 October 2008
Extract
By the measure of a set of directions in the plane we mean the linear measure of the set of points P on a unit circle for which the direction from the centre to P belongs to the set.
The ray issuing from a point P in direction θ will be denoted by P(θ).
- Type
- Research Notes
- Information
- Mathematical Proceedings of the Cambridge Philosophical Society , Volume 52 , Issue 1 , January 1956 , pp. 153 - 155
- Copyright
- Copyright © Cambridge Philosophical Society 1956