CONCERNING THE SINUOUS SHAPE OF LEAF EPIDERMAL CELLS
نویسندگان
چکیده
منابع مشابه
Concerning the shape of a geometric lattice
A well know conjecture states that the Whitney numbers of the second kind of a geometric lattice (simple matroid) are logarithmically concave. We show this conjecture to be equivalent to proving an upper bound on the number of new copoints in the free erection of the associated simple matroid M . A bound on the number of these new copoints is given in terms of the copoints and colines of M . Al...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 1976
ISSN: 0028-646X,1469-8137
DOI: 10.1111/j.1469-8137.1976.tb01510.x