Notes on Western Range Forbs: Equisetaceae through Fumariaceae
نویسندگان
چکیده
منابع مشابه
Notes on the Numerical Range
This is an introduction to the notion of numerical range for bounded linear operators on Hilbert space. The main results are: determination of the numerical range for two by two matrices, the Toeplitz-Hausdorff Theorem establishing the convexity of the numerical range for any Hilbert space operator, and a detailed discussion of the relationship between the numerical range and the spectrum. The ...
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—During field work along a transect in the Cordillera Central of western Panama between 2008 and 2010, we detected several populations of amphibian species which are considered as “Endangered” or “Critically Endangered” by the IUCN. Some of these species had suffered from serious population declines, probably due to chytridiomycosis, but all are generally threatened by habitat loss. We detected...
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The numerical range W (A) of an n×n matrix A is the collection of complex numbers of the form x∗Ax, where x ∈ C is a unit vector. It can be viewed as a “picture” of A containing useful information of A. Even if the matrix A is not known explicitly, the “picture” W (A) would allow one to “see” many properties of the matrix. For example, the numerical range can be used to locate eigenvalues, dedu...
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The Cainozoic history of the Malanna area included faulting, deposition of sediments by streams or in lakes and swamps, two epochs of planation, and stream erosion. There is no physiographic, depositional or structural evidence for gladation in this area, the type area of Lewis's Malanna Phase of the Pleistocene glaciation. This phase must be considered invalid on the eviaence available in the ...
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The seasonal distribution and relative abundance of adult Tabanidae were studied in 2 mining communities of western Labrador during 1984. Four collecting methods were compared. Fifteen species belonging to 2 genera were collected (6 Chrysops and 9 Hybomitra). Results were compared with other studies conducted in adjacent northern areas. Chrysops excitans was the most abundant species collected....
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ژورنال
عنوان ژورنال: Journal of Range Management
سال: 1960
ISSN: 0022-409X
DOI: 10.2307/3894791