Let be a space with measure , and let be a real function on the product space . When
(1)
| |||
(2)
|
exists for measures , is called the mutual energy. is then called the energy.
Let be a space with measure , and let be a real function on the product space . When
(1)
| |||
(2)
|
exists for measures , is called the mutual energy. is then called the energy.
Weisstein, Eric W. "Mutual Energy." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/MutualEnergy.html