Paying Tribute : Migrant Memorial Walls and the 'Nation of Immigrants'

Peer reviewedFinal Accepted Versio

Substratum Influence on (Rig-Vedic) Sanskrit?

published or submitted for publicationis peer reviewe

On the Coloring of Pseudoknots

Pseudodiagrams are diagrams of knots where some information about which strand goes over/under at certain crossings may be missing. Pseudoknots are equivalence classes of pseudodiagrams, with equivalence defined by a class of Reidemeister-type moves. In this paper, we introduce two natural extensions of classical knot colorability to this broader class of knot-like objects. We use these definitions to define the determinant of a pseudoknot (i.e. the pseudodeterminant) that agrees with the classical determinant for classical knots. Moreover, we extend Conway notation to pseudoknots to facilitate the investigation of families of pseudoknots and links. The general formulae for pseudodeterminants of pseudoknot families may then be used as a criterion for p-colorability of pseudoknots.Comment: 22 pages, 24 figure

Photometric properties of microfossil shells

The chromatic characteristics of fossil planktonic foraminifera were measured with the use of an opticoelectric microscope and a new aspect of their nature has been revealed