Graph algebras form a broad class of operator and algebraic structures arising from directed graphs, bridging the worlds of ring theory, operator algebras and dynamical systems. At their core, these ...

Plotting a graph takes time. Often mathematicians just want to know the key features. These are: shape, location and some key points (such as where the graph crosses the axes or turning points).

All quadratic functions have the same type of curved graphs with a line of symmetry. The graph of the quadratic function \(y = ax^2 + bx + c \) has a minimum turning point when \(a \textgreater 0 \) ...

Small separations in symmetric graphs (with B. Mohar) in preparation. Symmetric graphs with no K_n minor (with B. Mohar) in preparation Evolutionarily distinct species capture more phylogenetic ...