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An integral sign whose limits name a curve rather than two numbers.
Also known as: Path integral sign, Curve integral, Curvilinear integral
A line integral is written with an ordinary integral sign, and what makes it a line integral is that the subscript names a path — a curve C — instead of a lower bound. Nothing about the symbol itself changes, which is why the notation is easy to read past.
Denotes integration of a function along a specified curve, the curve named as a subscript on the integral sign.
Contexts: Mathematics
Uses the ordinary integral sign: the distinction from a definite integral lives entirely in what the limits are, not in the glyph.
Contexts: Mathematics
A tall elongated S-shape with a letter naming a curve set as a subscript beneath it instead of a numeric bound.