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Some inclusions of root systems can be expressed as one diagram being an induced subgraph of another, meaning "a subset of the nodes, with all edges between them". This is because eliminating a node from a Dynkin diagram corresponds to removing a simple root from a root system, which yields a root system of rank one lower.
Flicka, a horse in a series of film adaptations, My Friend Flicka (1943), Thunderhead, Son of Flicka (1945), and Green Grass of Wyoming (1948) Flicka, a horse in the 1956-1957 television series My Friend Flicka; Flicka, the horse in the 2006 American film Flicka and its sequels, Flicka 2 (2010) and Flicka: Country Pride (2012)
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Sierpiński-Dynkin's π-𝜆 theorem: [3] If is a π-system and is a Dynkin system with , then {}.. In other words, the 𝜎-algebra generated by is contained in . Thus a Dynkin system contains a π-system if and only if it contains the 𝜎-algebra generated by that π-system.
Dinkins is a comparatively rare surname. There are varying accounts as to the origin and early history of the Dinkins family. Leading researchers disagree as to whether the family is a variant of the Irish name "Duncan" from the Gaelic "Ó Duinnchinn".
A clade is by definition monophyletic, meaning that it contains one ancestor which can be an organism, a population, or a species and all its descendants. [ note 1 ] [ 10 ] [ 11 ] The ancestor can be known or unknown; any and all members of a clade can be extant or extinct.
The suffix -ome as used in molecular biology refers to a totality of some sort; it is an example of a "neo-suffix" formed by abstraction from various Greek terms in -ωμα, a sequence that does not form an identifiable suffix in Greek. Functional genomics aims at identifying the functions of as many genes as possible of a given organism. It ...
Lekking was originally described in the Tetraonidae (grouse, boldface in cladogram), in particular the black grouse (Swedish: "orrlek") and capercaillie (Swedish: "tjäderlek"), but it is widely distributed phylogenetically among other birds, and in many other animal groups within the vertebrates and the arthropods, as shown in the cladogram.