A note on the derived semifield planes of order 16.
A note on the independence number of an identically self-dual perfect matroid design.
A note on the realizaiton of distances within sets in euclidean space.
A note on tree realizations of matrices
It is well known that each tree metric M has a unique realization as a tree, and that this realization minimizes the total length of the edges among all other realizations of M. We extend this result to the class of symmetric matrices M with zero diagonal, positive entries, and such that mij + mkl ≤ max{mik + mjl, mil + mjk} for all distinct i,j,k,l.
A parallelogram configuration condition in nets
After describing a (general and special) coordinatization of -nets there are found algebraic equivalents for the validity of certain quadrangle configuration conditions in -nets with small degree .
A problem on matrices
A product theorem for Skolem sequences.
A random walk on the rook placements on a Ferrers board.
A reciprocity theorem for domino tilings.
A Recursive Construction for Room Designs
A recursive construction of 1-rotational Steiner 2-designs.
A Reduction of Lattice Tiling by Translates of a Cubical Cluster.
A regular graph of girth 6 and valency 11.
A relative Laplacian spectral recursion.
A remark on isotopies of digraphs and permutation matrices
A Simple and Relatively Efficient Triangulation of the n-Cube.
A simple proof of the Aztec diamond theorem.
A special class of triangular arrays.
A survey of pseudo (v, k, ...)-designs.
A survey on packing and covering problems in the Hamming permutation space.