Monotonous Broom Hairs: A Feature of Trichoteiromania

Ockham's broom: A new series

Although it is increasingly difficult to gauge what people can be expected to know, it is probably safe to assume that most readers are familiar with Ockham's razor – roughly, the principle whereby gratuitous suppositions are shaved from the interpretation of facts – enunciated by a Franciscan monk, William of Ockham, in the fourteenth century. Ockham's broom is a somewhat more recent conceit, ...

John Broom

On quas-monotonous graphs

A dominating coloring by k colors is a proper k coloring where every color i has a representative vertex xi adjacent to at least one vertex in each of the other classes. The b-chromatic number, b(G), of a graph G is the largest integer k such that G admits a dominating coloring by k colors. A graph G = (V,E) is said b-monotonous if b(H1) ≥ b(H2) for every induced subgraph H1 of G and every subg...

The Monotonous Elimination of Predicate Variables

I describe an algorithm which when given a sentence ? involving universally quantiied predicate variables, rst reduces this sentence to a normal form ? and then, if ? satisses certain extra restrictions, eliminates the predicate variables of ? to produce a predicate-free equivalent of ?. This process may involve the introduction of skolem functions but in many cases does not (and so produces a ...

Root hairs.

Roots hairs are cylindrical extensions of root epidermal cells that are important for acquisition of nutrients, microbe interactions, and plant anchorage. The molecular mechanisms involved in the specification, differentiation, and physiology of root hairs in Arabidopsis are reviewed here. Root hair specification in Arabidopsis is determined by position-dependent signaling and molecular feedbac...