The maximum number of times a surface can be cut along simple closed curves without the surface separating into disconnected parts. It is the same as the number of handles on the surface.
A surface of genus 1
A category used in the classification of organisms that consists of a number of similar or closely related species. The common name of an organism (especially a plant) is sometimes similar or identical to that of the genus, e.g. Lilium (lily), Crocus, Antirrhinum. Similar genera are grouped into families. See also binomial nomenclature.
See classification.
A class of things that share the same character, but divide into different subclasses or species. The genus summum is the most inclusive genus, not itself serving as a species to another yet more general kind. To define per genus et differentiam is to cite the genus and the differentiated species to which a thing belongs.
- packet radio
- packet sniffing
- packet switching
- packet switching network
- packet switching node
- pack ice
- packing
- packing density
- packing fraction
- packing of spheres
- packstone
- PAD
- pad
- Padalka, Gennadi Ivanovich (1958– )
- padding
- paddle
- p-adic numbers
- paedogenesis
- paedomorphosis
- Paektusan Space Launch Vehicle
- PAGE
- page
- page break
- page description language
- page frame