We can separate the classes in such nonlinear problems by introducing more hyperplanes; that is, by introducing more than one threshold unit. This is usually done by adding an extra (hidden ...

Tangent hyperplanes and the optimal bundle. Resource allocation and Pareto efficiency. Orthogonal matrices and quadratic forms. Critical points of quadratic functions. Taylor's approximation.

We further extend it to the notion of "generalised duality". We use it to classify and describe all geometric hyperplanes of a Segre geometry, which is the direct product of two arbitrary projective ...

We further extend it to the notion of "generalised duality". We use it to classify and describe all geometric hyperplanes of a Segre geometry, which is the direct product of two arbitrary projective ...

Second-order recurrence equations. Macroeconomic models. Vector geometry. Gradient and directional derivative. Tangent hyperplanes and the optimal bundle. Resource allocation and Pareto efficiency.