(geometry) Any of a certain family of graphs related to Keller's conjecture, such that the vertices of the Keller graph of dimension n are the 4ⁿ elements (m₁,...,mₙ) where each m is 0, 1, 2, or 3,...

Absence of a comb.

One who studies uredinology.

The act of consulting together formally; serious conversation or discussion; interchange of views. / (politics) A multilateral diplomatic negotiation.