A squared linear function
A squared linear function is a quadratic function of the form
for some vector .
The function vanishes on the space orthogonal to , which is the hyperplane defined by the single linear equation . Thus, in effect this function is really one-dimensional: it varies only along the direction .
Level sets and graph of a dyadic quadratic function, corresponding to the vector . The function is constant along hyperplanes orthogonal to . |
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