# Spindel

## Equation

$x^2+y^2-z^2=1$

• degree 2
• smooth
• doubly ruled

## Some story

Originally, I printed this hyperboloid of one sheet for a talk I gave at NCSU and Texas A&M, on monodromy. Particularly, this hyperboloid was used to talk about Schubert Calculus, with the intersection of 4 lines in 3-space.

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