An integral operator is a mathematical operator that transforms a function into another function via integration. It is a fundamental concept in various branches of mathematics, particularly in functional analysis, integral equations, and applied mathematics. The integral operator typically takes the form: \[ (Tf)(x) = \int_a^b K(x, t) f(t) \, dt \] where: - \( T \) is the integral operator. - \( f(t) \) is the input function.
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An integral operator maps a function to a function of the formA bounded continuous kernel on a compact domain defines a bounded operator in the uniform norm.