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Intersection of plane with quadratic regression surface
A quadratic OLS regression with two predictors is defined as:
$Z = b_0 + b_1X + b_2Y + b_3X^2 + b_4XY + b_5Y^2 + e$ (1)
If this regression surface is plotted, it can look like this ($b_0=10, ...
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Graphs of automorphisms (answered)
This is a continuation of Is the intersection of the diagonal with a graph always transverse in characteristic zero
Let $f:X\to X$ be an automorphism of a smooth projective connected curve over an ...
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Is the intersection of the diagonal with a graph always transverse in characteristic zero
Let X be a projective smooth connected curve over $\mathbf{C}$. Let $f:X\to X$ be a non-constant morphism.
Is the intersection of the diagonal $\Delta_X$ and the graph $\Gamma_f$ on $X\times X$ ...
