(mathematics) The equation that defines the Legendre polynomials: d/dx[(1-x²)d/dxP_n(x)]+n(n+1)P_n(x)=0.

plural of learning difference

A learning disability.

A learning disability. / (UK, euphemistic) Any of a series of medically recognized conditions (as opposed to diseases) that inhibit a person's ability to function in the world.

plural of differential operator

(mathematics, mathematical analysis) An operator defined as a function of the differentiation operator (the operator which maps functions to their derivatives).

plural of difference quotient

(mathematical analysis) The slope of a secant as obtained by dividing the vertical difference between two intersections of the secant and a curve with their horizontal distance. When the horizontal distance approaches zero the slope of the secant approaches the derivative of the curve.

plural of differential geometry

The morphometry of diffeomorphisms