The transportation of agricultural products often involves bags made from hessian jute fabric. Several Revolutionary armies were easily defeated by the professional Austrian, Hessian, Brunswick and Prussian troops. This is done buy using hessian or polypropylene. The Wellington boot was originally a type of leather boot adapted from Hessian boots. Other quasi-Newton methods use more elaborate secant updates to give approximation of Hessian matrix. This tensor degenerates to the usual Hessian matrix when = 1. The eigenvectors of the Hessian matrix identify sensitive coil deviations. The British soldiers and Hessian mercenaries numbered about 30,000. Hodge Laplacian, i.e., the "opposite" of the usual trace of the Hessian. The multivariate resultant of the partial derivatives of is equal to its Hessian determinant. SURF uses a blob detector based on the Hessian matrix to find points of interest. The determinant of the Hessian at is called, in some contexts, a discriminant. Again, basically, the information lies in the eigenvalues of the Hessian operator. The determinant of the Hessian matrix is called the "Hessian determinant". The Central Hessian region was inhabited in the Upper Paleolithic.