8 citations · 8 across the 8 of their papers we have counts for
8 papers
How do 9 points look like in ?
Ricardo Strausz
The aim of this note is to give an elementary proof of the following fact: given 3 red convex sets and 3 blue convex sets in , such that every red intersects every bl…
On the number of heterochromatic trees in nice and beautiful colourings of complete graphs
Juan José Montellano-Ballesteros, Eduardo Rivera-Campo, Ricardo Strausz
We introduce classes of edge-colourings of the complete graph -- that we call nice and beautiful -- and study how many heterochromatic spanning trees appear under such colourings.…
H-Kernels by Walks
Hortensia Galeana-Sanchez, Hugo Rincon-Galeana, Ricardo Strausz
We prove that, if every cycle of is an -cycle, then has an -kernel by walks.
On the pseudoachromatic index of the complete graph III
G. Araujo-Pardo, J. J. Montellano-Ballesteros, C. Rubio-Montiel +1
Let be the projective plane of order , let the pseudoachromatic number of the complete line graph of order , let $ a\in \{ 3,4,\dots,\tfrac{q}{2…
On Panchromatic Patterns
Hortensia Galeana-Sanchez, Ricardo Strausz
Given D and H two digraphs, D is H-coloured iff the arcs of D are coloured with the vertices of H. After defining what do we mean by an H-walk in the coloured D, we characterise th…
On The Acyclic MacPhersonian
Ricardo Strausz
The acyclic MacPhersonian $\AM_n^d$ is the poset of acyclic oriented matroids of rank on labelled elements, the combinatorial model of the space of configurations of …