(mathematics) A real algebraic integer greater than 1 all of whose Galois conjugates are less than 1 in absolute value.

plural of Pisot number

plural of Pisot-Vijayaraghavan number

A scientist who uses or promotes numerical taxonomy.

A form of taxonomy, or biological classification, that attempts to group organisms by means of numerical algorithms (such as cluster analysis) rather than by subjective evaluation of their properties.

plural of numerical taxonomist

There is more strength in groups than individuals.

Short for there is safety in numbers.

(mathematics) Synonym of circuit rank

(mathematics) A natural number of the form n·2ⁿ+1.