Bahman Ahmadi

collaborators

3 papers

math.CO2017

A note on perfect quantum state transfers on trees

Bahman Ahmadi, Ahmad Mokhtar

It has been asked whether there are trees other than $P_{2}$ and $P_{3}$ which can admit perfect state transfers. In this note we show that the answer is negative.

math.CO2013

Minimum number of distinct eigenvalues of graphs

Bahman Ahmadi, Fatemeh Alinaghipour, Michael S. Cavers +3

The minimum number of distinct eigenvalues, taken over all real symmetric matrices compatible with a given graph $G$ , is denoted by $q (G)$ . Using other parameters related to $G$ , b…

math.CO2013

A new proof for the Erdős-Ko-Rado Theorem for the alternating group

Bahman Ahmadi, Karen Meagher

A subset $S$ of the alternating group on $n$ points is {\it intersecting} if for any pair of permutations $π, σ$ in $S$ , there is an element $i \in {1, \dots, n}$ such that $π(i)=σ(i…