I can't find this online from a simple search, and I cannot remember.
Given two curves/path $C$ and $D$, what is the notation for path concatenation when describing a path integral? Here are some ideas I came up with. Is there a canonical notation?
- $\int_{CD} f \cdot d\vec r$
- $\int_{C+D} f \cdot d\vec r$
- $\int_{C \circ D} f \cdot d\vec r$