second species

second species

[¦sek·ənd ′spē‚shēz]
(mathematics)
The class of sets G0 such that all the sets Gn are nonempty, where, in general, Gn is the derived set of Gn-1.
References in classic literature ?
It appears to me a curious circumstance, as showing the fine shades of difference in habits, that judging from this latter respect alone, when I first saw this second species, I thought it was different from the Maldonado kind.
Port Townsend, WA, July 17, 2015 --(PR.com)-- July's releases from Class Act Books feature another entry in the Dark Urban Fantasy series The Second Species as well as Science Fiction and Horror.
Shadow Law, Book 5 in the Second Species series, continues the story of the Strigoi clan's pursuit of Mircea Ravagiu, murderer of their family and the reason they were exiled from their Carpathian home.
A third species is sensitive to the toxin but can overtake the second species because it's unburdened by the metabolic cost of producing an antidote.
Three species of manatees exist; one in southeastern USA, West Indies and Mexico to northern South America; a second species in the Amazon/Orinoco systems and a third in West and Central Africa.
A second species, the slender-snouted crocodile, a West African rainforest animal, is reported for Chad but doubtful.
A 1995 fish kill in eastern North Carolina led to the discovery by North Carolina State University marine scientists of a second species of Pfiesteria.
"Diagnostic markers" are markers that occur in all individuals of one species and no individuals of a second species. "Species-specific markers" are markers that are unique to one species but not necessarily found in all individuals.
He welcomes the data on a second species but cautions that pesticide susceptibility arises in complex patterns.
A second species better at scavenging that nutrient then comes into its own and supplants the first.
With the recent genetic evidence, New Zealand officials have recognized a second species, the olive yellow Sphenodon guntheri, as distinct from the more abundant but drabber S.