In 2010, Guth and Katz proved that if a collection of N lines in R^3 contained more than N^{3/2} 2-rich points, then many of these lies must lie on planes or reguli. I will discuss some generalizations of this result to space curves in R^3. This is joint work with Larry Guth.
Back to Workshop IV: Finding Algebraic Structures in Extremal Combinatorial Configurations