English: A path integral can be converted to a volume integral be replacing the displacement differential dq with the shown expression that is proportional to the volume differential dV. As is shown, the path is diffused to fill a thin tube. The integrand of the volume integral at all points outside of this thin tube is 0.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.