## Geometric constructions on cycles in $$\mathbb{R}^n$$.(English)Zbl 1343.51014

In this paper, the authors study geometric objects in $$\mathbb R^{n}$$ which correspond to the intersection of a quadric surface $$\Omega$$ with projective subspaces of $$P^{n+2}$$.

### MSC:

 51M15 Geometric constructions in real or complex geometry 15A63 Quadratic and bilinear forms, inner products 51M04 Elementary problems in Euclidean geometries
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### References:

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