Packing and covering triangles

Series
Graph Theory Working Seminar
Time
Wednesday, March 6, 2019 - 4:30pm for 1 hour (actually 50 minutes)
Location
Skiles 006
Speaker
Youngho Yoo – Georgia Tech
Organizer
Xingxing Yu

Let $\nu$ denote the maximum size of a packing of edge-disjoint triangles in a graph $G$. We can clearly make $G$ triangle-free by deleting $3\nu$ edges. Tuza conjectured in 1981 that $2\nu$ edges suffice, and proved it for planar graphs. The best known general bound is $(3-\frac{3}{23})\nu$ proven by Haxell in 1997. We will discuss this proof and some related results.