搜索结果: 1-12 共查到“知识库 理学 HOOK”相关记录12条 . 查询时间(0.24 秒)
Teaching Strategies that Hook Classroom Learners
Hook Classroom Learners Teaching Strategies
2015/7/3
It should not be a surprise to learn that most earth science/oceanography and other STEM (Science, Technology, Engineering, Mathematics) faculty teach classes the same way they were taught, typically ...
q-Hook Length Formulas for Signed Labeled Forests
statistic forest q-hook length formula Coxeter groups of types B and D (P w)-partition
2014/6/3
A signed labeled forest is defined as a (plane) forest labeled by {1, 2,..., n} along with minus signs associated to some vertices. Signed labeled forests can be viewed as an extension of signed permu...
Oscillating Rim Hook Tableaux and Colored Matchings
Oscillating m-rim hook tableau m-colored matching lattice path bijection Dyck path packing
2014/6/3
Motivated by the question of finding a type B analogue of the bijection between oscillating tableaux and matchings, we find a correspondence between oscillating m-rim hook tableaux and m-colored match...
A multivariate hook formula for labelled trees
hook formula tree enumeration representation theory of symmetric groups finite difference operators multivariate Lagrange inversion
2012/5/24
Several hook summation formulae for binary trees have appeared recently in the literature. In this paper we present an analogous formula for unordered increasing trees of size r, which involves r para...
A multivariate "inv" hook formula for forests
hook formula forests moulds binary search free quasisymmetric functions Loday-Ronco algebra
2011/9/14
Abstract: Bjoerner and Wachs provided two q-generalizations of Knuth's hook formula counting linear extensions of forests: one involving the major index statistic, and one involving the inversion numb...
On Han's Hook Length Formulas for Trees
hook length formula k-ary tree bijection staircase labeling
2014/6/3
Recently, Han obtained two hook length formulas for binary trees and asked for combinatorial proofs. One of Han’s formulas has been generalized to k-ary trees by Yang. Sagan has found a probabilistic ...
Using Hook Schur Functions to Compute Matrix Cocharacters
Using Hook Schur Functions Compute Matrix Cocharacters
2010/11/12
We use hook Schur functions to compute trace cocharacters of matrices in hooks. As an example we compute the cocharacters of 3 x 3 matrices in the one by two hook
Kronecker multiplicities in the $(k,\ell)$ hook are polynomially bounded
Kronecker multiplicities polynomially bounded
2010/11/12
The problem of decomposing the Kronecker product of $S_n$ characters is one of the last major open problems in the ordinary representation theory of the symmetric group $S_n$. Here we prove upper and...
Hook Length Formulas for Trees by Han's Expansion
hook length formulas for trees k-ary trees planes trees labeled trees
2014/6/3
Recently Han obtained a general formula for the weight function corresponding to the expansion of a series in terms of hook lengths of binary trees. In this paper, we present weight function formulas ...
油果樟属（Syndiclis Hook．f．）的分类与分布兼论这一分布类型的特征
油果樟属 分类 分布
2009/1/23
油果樟属是J．D．Hooker根据Booth采自不丹的一份樟科植物标本于1886年建立起来的。该属建立时是一单型属，其特征是：花被裂片4，全然脱落，形状为横向长圆形，排成2轮，内轮2片较小；能育雄蕊4，与花被裂片对生且等长，宽卵圆形，厚而被毛，具腺点，1室，以单瓣开裂；退化雄蕊4，细小，披针形，被毛；子房无毛，向上渐狭。A．J．Kostermans于1939年（in Not．Syst．8：73）对...
The Effect of Seed Mass on Germination, Seedling Survival and Growth in Prunus jenkinsii Hook.f. & Thoms.
Seed mass germination seedling survival seedling vigour
2010/3/18
The effect of seed mass on germination, seedling survival and growth was investigated in Prunus jenkinsii Hook.f. & Thoms. (Rosaceae), an evergreen tree species. Seed mass varied from a minimum of 0.5...
The physicochemical habitat of Sclerolinum sp. at Hook Ridge hydrothermal vent, Bransfield Strait, Antarctica
physicochemical habitat Sclerolinum sp. Hook Ridge hydrothermal vent Bransfield Strait Antarctica
2014/5/9
At Hook Ridge hydrothermal vent, a new species of Sclerolinum (Monilifera, Siboglinidae) was found at a water depth of 1,045 m. On the basis of investigations of multicores and gravity cores, the spec...