Frederick Hoffman 
Combinatorics, Graph Theory and Computing [PDF ebook] 
SEICCGTC 2020, Boca Raton, USA, March 9–13

Ratio Balancing Numbers(Bartz et al).- An Unexpected Digit Permutation from Multiplying in any Number Base(Qu et al).- A & Z Sequences for Double Riordan Arrays (Branch et al).- Constructing Clifford Algebras for Windmill and Dutch Windmill Graphs; A New Proof of The Friendship Theorem(Myers).- Finding Exact Values of a Character Sum (Peart et al).- On Minimum Index Stanton 4-cycle Designs (Bunge et al).- k-Plane Matroids and Whiteley’s Flattening Conjectures (Servatius et al).- Bounding the edge cover of a hypergraph (Shahrokhi).- A Generalization on Neighborhood Representatives (Holliday).- Harmonious Labelings of Disconnected Graphs involving Cycles and Multiple Components Consisting of Starlike Trees(Abueida et al).- On Rainbow Mean Colorings of Trees (Hallas et al).- Examples of Edge Critical Graphs in Peg Solitaire (Beeler et al).- Regular Tournaments with Minimum Split Domination Number and Cycle Extendability (Factor et al).- Independence and Domination of Chess Pieces on Triangular Boards and on the Surface of a Tetrahedron(Munger et al).- Efficient and Non-efficient Domination of Z-stacked Archimedean Lattices (Paskowitz et al).- On subdivision graphs which are 2-steps Hamiltonian graphs and hereditary non 2-steps Hamiltonian graphs (Lee et al).- On the Erd}os-S_os Conjecture for graphs with circumference at most k + 1 (Heissan et al).- Regular graph and some vertex-deleted subgraph (Egawa et al).- Connectivity and Extendability in Digraphs (Beasle).-

On the extraconnectivity of arrangement graphs (Cheng et al).- k-Paths of k-Trees(Bickle).-

Rearrangement of the Simple Random Walk(Skyers et al).- On the Energy of Transposition Graphs(De Deo).- A Smaller Upper Bound for the (4; 82) Lattice Site Percolation Threshold(Wierman).

Frederick Hoffman is Professor of mathematical sciences at Florida Atlantic University, Boca Raton, USA. He obtained his Ph D in Mathematics (1964) from the University of Virginia, USA. Dr. Hoffman directed thirty-five of the Southeastern International Conferences on Combinatorics, Graph Theory and Computing. He was one of the founding faculty of the FAU Computer Science Department, and a founding fellow of The Institute of Combinatorics and its Applications. His research interests focus on finite groups, combinatorics and applications, and artificial intelligence.