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Stability Conditions on Threefolds and Space Curves
Schmidt, Benjamin

2016, Doctor of Philosophy, Ohio State University, Mathematics.
This thesis investigates both constructions and applications of Bridgeland stability conditions on smooth complex projective varieties of dimension three.

A conjectural construction of stability condition on threefolds due to Bayer, Macr\`i and Toda will be proven for the smooth quadric threefold and analogies to the proof for three-dimensional projective space will be pointed out. This implies the existence of a large family of Bridgeland stability conditions. Moreover, we will give a counterexample to the conjecture for the blow up of three dimensional projective space in a point.

In between slope stability and Bridgeland stability there is the notion of tilt stability. Computations in it are similar to those for Bridgeland stability on surfaces. A technique to translate computations in tilt stability to wall crossings in Bridgeland stability will be developed.

The author computes first examples of wall crossing behaviour in three dimensional projective space. In particular, for Hilbert schemes of curves such as twisted cubics or complete intersection curves of the same degree, two chambers in the stability manifold are described where the moduli space is given by a smooth projective irreducible variety respectively the Hilbert scheme. In the cases of twisted cubics and elliptic quartics, all walls and moduli spaces on a path between those two chambers are computed. This recovers former results about the geometry of these spaces.
David Anderson (Advisor)
Emanuele Macri (Committee Member)
Herbert Clemens (Committee Member)
James Cogdell (Committee Member)
118 p.

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Schmidt, B. (2016). Stability Conditions on Threefolds and Space Curves. (Electronic Thesis or Dissertation). Retrieved from

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Schmidt, Benjamin. "Stability Conditions on Threefolds and Space Curves." Electronic Thesis or Dissertation. Ohio State University, 2016. OhioLINK Electronic Theses and Dissertations Center. 25 Sep 2017.

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Schmidt, Benjamin "Stability Conditions on Threefolds and Space Curves." Electronic Thesis or Dissertation. Ohio State University, 2016.


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