搜索结果: 61-75 共查到“理学 0 1 Classes”相关记录144条 . 查询时间(0.093 秒)
Determination of the number of isomorphism classes of extensions of a $\kp$-adic field
extensions $\kp$-adic field
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2010/11/8
We deduce a formula enumerating the isomorphism classes of extensions of a $\kp$-adic field $K$ with given ramification $e$ and inertia $f$. The formula follows from a simple group-theoretic lemma, pl...
Quaternionic Grassmannians and Pontryagin classes in algebraic geometry
Quaternionic Grassmannians Pontryagin classes algebraic geometry
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2010/11/9
The quaternionic Grassmannian HGr(r,n) is the affine open subscheme of the ordinary Grassmannian parametrizing those 2r-dimensional subspaces of a 2n-dimensional symplectic vector space on which the ...
Chern-Simons classes and the Ricci flow on 3-manifolds
Chern-Simons classes the Ricci flow on 3-manifolds
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2010/11/19
In 1974, S.-S. Chern and J. Simons published a paper where they defined a new type of characteristic class - one that depends not just on the topology of a manifold but also on the geometry. The goal...
Conjugacy classes in Weyl groups and q-W algebras
Conjugacy classes Weyl groups q-W algebras
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2010/11/17
We define noncommutative deformations W_q^s(G) of algebras of regular functions on certain transversal slices to the set of conjugacy classes in an algebraic group G which play the role of Slodowy sl...
Internal perturbations of homoclinic classes:non-domination, cycles, and self-replication
homoclinic classes non-domination cycles
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2010/11/19
Conditions are provided under which lack of domination of a homoclinic class yields robust heterodimensional cycles. Moreover, so-called viral homoclinic classes are studied. Viral classes have the p...
Classes of extension modules by Serre subcategories
extension modules Serre subcategories
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2010/11/9
In this paper, to find a way of constructing Serre subcategories of the modules category, we consider classes of extension modules of Serre subcategory by another one and study when these classes are ...
Classification of Saccharomyces cerevisiae promoter regions into distinct chromatin classes reveals the existence of nucleosome-depleted hotspots of transcription factor occupancy
Classification Saccharomyces cerevisiae promoter regions distinct chromatin classes existence nucleosome-depleted hotspots factor occupancy
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2010/11/15
Transcription factors (TF) play an essential role in the cell as locus- and condition-specific recruiters of transcriptional machinery or chromatin-modifying complexes. However, predicting the in vivo...
Two classes of slant surfaces in nearly Kahler six sphere
slant surfaces K¨ahler angle octonions six sphere
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2010/12/14
In this paper we find examples of slant surfaces in the nearly K¨ahler six sphere. First, we characterize two-dimensional small and great spheres which are slant.
Distribution of the systolic volume of homology classes
Systolic volume homology of a group with integer coefficients
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2010/12/6
Given a pair (G, a) where G is a finitely presentable group and a is an integer homology class of this group, Gromov defined in [Gro83] a new numerical invariant associated to this pair called systoli...
Anticanonical divisors and curve classes on Fano manifolds
Anticanonical divisors curve classes Fano manifolds
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2010/12/6
It is well known that the Hodge conjecture with rational coefficients holds for degree 2n − 2 classes on complex projective n-folds. In this paper we study the more precise question if on a rati...
An Asymptotic for the Number of Solutions to Linear Equations in Prime Numbers from Specified Chebotarev Classes
symptotic for the Number of Solutions to Linear Equations Prime Numbers Specified Chebotarev Classes
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2010/12/1
An Asymptotic for the Number of Solutions to Linear Equations in Prime Numbers from Specified Chebotarev Classes.
On Approximations and Ergodicity Classes in Random Chains
Approximations Ergodicity Classes Random Chains
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2010/11/30
We study the limiting behavior of a random dynamic system driven by a stochastic chain. Our main interest is in the chains that are not necessarily er godic but rather decomposable into ergodic classe...
Products of Geck-Rouquier conjugacy classes and the Hecke algebra of composed permutations
Iwahori-Hecke algebras Geck-Rouquier conjugacy classes symmetric functions
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2010/12/9
We show the q-analog of a well-known result of Farahat and Higman: in the center of the Iwahori-Hecke algebraHn,q, if (a μ(n, q)) is the set of structure constants involved in the product of two G...
Residue classes containing an unexpected number of primes
Residue classes unexpected number of primes
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2010/12/6
We fix a non-zero integer a and consider arithmetic progressions a mod q, with q varying over a given range. We show that for certain specific values of a, the arithmetic progressions a mod q contain,...
Derived Resolution Property for Stacks, Euler Classes and Applications
Derived Resolution Property for Stacks Euler Classes Applications
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2010/12/13
By resolving any perfect derived object over a Deligne-Mumford stack, we define its Euler class. We then apply it to define the Euler numbers for a smooth Calabi-Yau threefold in P4. These numbers are...