The WL-rank of a graph Γ is defined to be the rank coherent configuration Γ. We construct new infinite family strictly Deza Cayley graphs for which equal number vertices. from this are divisible design and integral.

We construct an infinite family of symplectic spreads in spaces of odd rank and characteristic.

In view of Albert's classical result that the dimension of each ordered, associative proper algebra over its center is necessarily infinite (cf. [1]), it seems not unlikely that a similar statement also holds for the rank of each proper formally real quasifield F, i.e. for the dimension of F over its kernel. Indeed, for some classes of ordered near fields and for ordered quasifields admitting a...

We construct an infinite family of minor-minimal rank three matroids that are not orientable.

Bounded, semi-infinite Hankel matrices of finite rank over the space 2 of square-summable sequences occur frequently in classical analysis and engineering applications. The notion of finite rank often appears under different contexts and the literature is diverse. The first part of this paper reviews some elegant, classical criteria and establishes connections among the various characterization...