6 citations · 31 across the 45 of their papers we have counts for
6 papers · 1 filter
Bijection Between Point-Hyperplane Anti-Flags of and Non-Singular Points of
Ferdinand Ihringer, Antonio Pasini
We give a bijection between the point-hyperplane antiflags of and the nonsingular points of with respect to a hyperbolic quadric. With the help of…
Design switching on graphs
Ferdinand Ihringer, Robin Simoens
We show that each (r, lambda)-design yields a class of switching methods that can be used to produce cospectral graphs. We use this to explain several specific switching methods su…
New Constructions of Distance-Biregular Graphs
Blas Fernández, Ferdinand Ihringer, Sabrina Lato +1
We construct a new family of distance-biregular graphs related to hyperovals and a new sporadic example of a distance-biregular graph related to Mathon's perp system. The infinite…
Small genus, small index critical points of the systole function
Ni An, Ferdinand Ihringer, Ingrid Irmer
In this paper the index of a family of critical points of the systole function on Teichmüller space is calculated. The members of this family are interesting in that their existenc…
On the twin-width of near-regular graphs
Irene Heinrich, Ferdinand Ihringer, Simon Raßmann +1
Twin-width is a recently introduced graph parameter based on the repeated contraction of near-twins. It has shown remarkable utility in algorithmic and structural graph theory, as…
Intersecting Families of Spanning Trees
Peter Frankl, Glenn Hurlbert, Ferdinand Ihringer +4
A family of spanning trees of the complete graph on vertices is \emph{-intersecting} if any two members have a forest on edges in common. We prove an…