# Doubt related to notation used in writing Maxwell's equations

Hamiltonian
Homework Statement:
not exactly a home work problem, just a small confusion as to what ##\partial S## and ##\partial V## mean in the equations given bellow.
Relevant Equations:
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What does ##S=\partial V## and ##C=\partial S## signify, usually I have only seen books writing ##C## when evaluating a line integral over a curve ##C## and ##S## when evaluating a surface integral over a surface ##S##. Could someone clarify what ##\partial S## and ##\partial V## mean?