Soluble groups with no $\protect \mathbb{Z}\wr \protect \mathbb{Z}$ sections
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چکیده
منابع مشابه
No-take reserves protect coral reefs from predatory starfish
The crown-of-thorns starfish, Acanthaster planci, is a predator of corals that is a major management issue on coral reefs [1]. It occurs throughout the Indo–Pacific and shows boom–bust population dynamics with low background densities and intermittent outbreaks. Three waves of population outbreaks have affected Australia’s Great Barrier Reef (GBR) since the 1960s. The waves of outbreaks appear ...
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With rising sea levels and environmental problems caused by population and economic pressures colliding at the world's coastlines, there are huge risks to people and the environment, but also opportunities to restore natural defences and help both. Michael Gross reports.
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We study a strategic model in which a defender must allocate defensive resources to a collection of locations, and an attacker must choose a location to attack. The defender does not know the attacker's preferences, while the attacker observes the defender's resource allocation. The defender's problem gives rise to negative externalities, in the sense that increasing the resources allocated to ...
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OVERSEEDING: WHICH GRASSES ARE BEST 1971 overseeding results in south Florida. A. E. Dudeck andE. O. Burt. Florida Turf. 4 (5):3-6. (from the University of Florida Agricultural Research Center, Fort Lauderdale, Fla. 33314). The objective of this investigation was to evaluate monostands and polystands of various cool season turfgrasses for use in overseeding dormant bermudagrass putting greens u...
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ژورنال
عنوان ژورنال: Annales Henri Lebesgue
سال: 2020
ISSN: 2644-9463
DOI: 10.5802/ahl.51