منابع مشابه
Rim Hook
We consider the partial order on partitions of integers deened by removal of rim hooks of a given length. The isomorphism between this poset and a product of Young's lattices leads to rim hook versions of Schensted correspondences. Analogous results are given for shifted shapes. A shape, or Young diagram, is a nite order ideal of the lattice P 2 = f(k; l) : k; l 1g. Each shape = f(i; j) : 1 j i...
متن کاملThe Plethysm sλ[sμ] at Hook and Near-Hook Shapes
We completely characterize the appearance of Schur functions corresponding to partitions of the form ν = (1a, b) (hook shapes) in the Schur function expansion of the plethysm of two Schur functions, sλ[sμ] = ∑ ν aλ,μ,νsν . Specifically, we show that no Schur functions corresponding to hook shapes occur unless λ and μ are both hook shapes and give a new proof of a result of Carbonara, Remmel and...
متن کاملCrystal Structure of a Complex of DNA with One AT-Hook of HMGA1
We present here for the first time the crystal structure of an AT-hook domain. We show the structure of an AT-hook of the ubiquitous nuclear protein HMGA1, combined with the oligonucleotide d(CGAATTAATTCG)(2), which has two potential AATT interacting groups. Interaction with only one of them is found. The structure presents analogies and significant differences with previous NMR studies: the AT...
متن کاملبررسی تغییرات فصلی اسانس Eucalyptus maculata Hook.
توانایی اکالیپتوس‌ها در رشد سریع سبب شده تا این جنس در جنگل‌کاری، مصارف صنعتی و دارویی اهمیت فوق‌العاده‌ای پیدا کند. گونه درختی Eucalyptus maculata Hook. از نظر تولید برخی ترکیبهای شیمیایی و مصارف دارویی نسبت به سایر اکالیپتوس‌ها از اهمیت خاصی برخوردار است. در این پژوهش برای بررسی تغییرات کمّی اسانس و نوع ترکیبهای تشکیل‌دهنده برگ درخت E. maculata، از منطقه گرمسیری دزفول (ایستگاه تحقیقاتی صفی‌آب...
متن کاملIntegrality of hook ratios
We study integral ratios of hook products of quotient partitions. This question is motivated by an analogous question in number theory concerning integral factorial ratios. We prove an analogue of a theorem of Landau that already applied in the factorial case. Under the additional condition that the ratio has one more factor on the denominator than the numerator, we provide a complete classific...
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ژورنال
عنوان ژورنال: The Iowa Review
سال: 1973
ISSN: 0021-065X,2330-0361
DOI: 10.17077/0021-065x.1528