Perron-Frobenius Operator
An Operator which describes the time evolution of densities in Phase Space. The Operator can be definedby
where
are the Natural Densities after the 
th iteration of a map 
. This can beexplicitly written as
References
Beck, C. and Schlögl, F. ``Transfer Operator Methods.'' Ch. 17 in Thermodynamics of Chaotic Systems. Cambridge, England: Cambridge University Press, pp. 190-203, 1995.
- Lattice Point
- Lattice Reduction
- Lattice Sum
- Lattice Theory
- Latus Rectum
- Laurent Polynomial
- Laurent Series
- Law
- Law of Anomalous Numbers
- Law of Cancellation
- Law of Cosines
- Law of Large Numbers
- Law of Sines
- Law of Small Numbers
- Law of Tangents
- Law of Truly Large Numbers
- Lax-Milgram Theorem
- Lax Pair
- Layer
- Leading Digit Phenomenon
- Leading Order Analysis
- Leaf (Foliation)
- Leaf (Tree)
- Leakage
- Least Bound