In this paper we study the Jones polynomials of virtual links and abstract links. It is proved that a certain property of the Jones polynomials of classical links is valid for virtual links which admit checkerboard colorings.

We tested color perception based upon a robust behavioral response in which cuttlefish (Sepia officinalis) respond to visual stimuli (a black and white checkerboard) with a quantifiable, neurally controlled motor response (a body pattern). In the first experiment, we created 16 checkerboard substrates in which 16 grey shades (from white to black) were paired with one green shade (matched to the...

Global analyses of RNA expression levels are useful for classifying genes and overall phenotypes. Often these classification problems are linked, and one wants to simultaneously find "marker genes" that are differentially expressed in particular “conditions”. We have developed a method that simultaneously clusters genes and conditions, finding distinctive "checkerboard" patterns in matrices of ...

Traditionally, standard Lagrangian-type finite elements, such as linear quads and triangles, have been the elements of choice in the field of topology optimization. However, finite element meshes with these conventional elements exhibit the well-known "checkerboard" pathology in the iterative solution of topology optimization problems. A feasible alternative to eliminate such long-standing prob...

Global analyses of RNA expression levels are useful for classifying genes and overall phenotypes. Often these classification problems are linked, and one wants to find "marker genes" that are differentially expressed in particular sets of "conditions." We have developed a method that simultaneously clusters genes and conditions, finding distinctive "checkerboard" patterns in matrices of gene ex...

Skottun & Skoyles [Skottun and Skoyles (2009). On interpreting responses to low contrast stimuli in terms of magnocellular activity – a few remarks. Vision Research] have written a comment on our recent paper (Lalor & Foxe, 2009). Specifically they raise the following three issues: (1) spatial resolution and temporal tuning are similar in magnoand parvocellular neurons. (2) Results from lesion ...