pointmassfunction
nounUK /pɔɪnt mæs ˈfʌŋkʃən/
US /pɔɪnt mæs ˈfʌŋkʃən/
A math rule that gives a value to a single exact point.
The pointmassfunction assigns a weight of one to the exact point where the particle sits.
OTHER MEANINGS
2. A function that concentrates all its mass at one single location.
In the limit, the pointmassfunction places the entire unit mass at the origin.
3. A discrete assignment of weight to individual points rather than intervals.
The pointmassfunction lets us sum probabilities over separate points instead of a continuous range.
4. A mathematical tool used to model an idealized particle with mass but no size.
Physicists use a pointmassfunction to describe a tiny particle as if it were a single point.