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parabolic differential equation

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parabolic differential equation [¦par·ə¦bäl·ik ‚dif·ə′ren·chəl i′kwā·zhən]
(mathematics)
A general type of second-order partial differential equation which includes the heat equation and has the formwhere theAij,Bi,C, andFare suitably differentiable real functions ofx1,x2, …,xn, and there exists at each point (x1, …,xn) a real linear transformation on thexiwhich reduces the quadratic formto a sum of fewer thannsquares, not necessarily all of the same sign, while the same transformation does not reduce theBito 0. Also known as parabolic partial differential equation.


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