Results 41 to 50 of about 343,735 (322)
The puzzle conjecture for the cohomology of two-step flag manifolds [PDF]
We prove a conjecture of Knutson asserting that the Schubert structure constants of the cohomology ring of a two-step flag variety are equal to the number of puzzles with specified border labels that can be created using a list of eight puzzle pieces. As
Buch, Anders Skovsted+3 more
core +1 more source
On the ring of constants of a diagonalizable higher derivation
AbstractLet D be a diagonalizable higher derivation on a polynomial ring. We determine the canonical module of the ring of constants of D and give a criterion for its ring of constants to be Gorenstein.
Nobuharu Onoda, Yasunori Ishibashi
openaire +2 more sources
A series of rhodamine derivatives L1–L3 have been prepared and characterized by IR, 1H-NMR, 13C-NMR and ESI-MS. These compounds exhibited selective and sensitive “turn-on” fluorescent and colorimetric responses to Al3+ in methanol.
Naveen Mergu+2 more
doaj +1 more source
We report the observation and analysis of the rotational spectrum of a 1:1 cluster between 2-aminopyridine and water (AMW) carried out with supersonic expansion Fourier transform microwave spectroscopy at 4.7–16.5 GHz. Measurements of the 2-aminopyridine
Adam Kraśnicki+2 more
doaj +1 more source
Equivariant Quantum Schubert Polynomials [PDF]
We establish an equivariant quantum Giambelli formula for partial flag varieties. The answer is given in terms of a specialization of universal double Schubert polynomials.
Anderson, D., Chen, Linda
core +2 more sources
Constants of Algebraic Derivations in Prime Rings
Let R be a prime ring with extended centroid F and δ an F-algebraic derivation of R with the associated inner derivation ad(b). Set , the subring of constants of δ in R. We characterize the primeness and semiprimeness of R (δ) by the minimal polynomial μ(λ) of b over F.
Chuang, C.-L, Lee, T.-K, Zhou, Y.
openaire +3 more sources
A variant of the large sieve inequality with explicit constants
We give an effective version with explicit constants of the large sieve inequality for imaginary quadratic fields. Explicit results of this kind are useful for estimating the computational complexity of algorithms which generate elements, whose norm is a
Grześkowiak Maciej
doaj +1 more source
Rings of Constants of the Formk[f] [PDF]
Let k[X] be the algebra of polynomials in n variables over a field k of characteristic zero, and let f ∊ k[X]∖ k. We present a construction of a derivation d of k[X] whose ring of constants is equal to the integral closure of k[f] in k[X]. A similar construction for fields of rational functions is also given.
Essen, A.R.P. van den+2 more
openaire +3 more sources
The chiral ring of a symmetric orbifold and its large N limit
We analyze the chiral operator ring of the symmetric orbifold conformal field theory on the complex two-plane ℂ2. We compute the large N limit of the ring and exhibit its factorized leading order behaviour.
Sujay K. Ashok, Jan Troost
doaj +1 more source
Influence of per-O-sulfation upon the conformational behaviour of common furanosides
The studies on the recently discovered pyranoside-into-furanoside rearrangement have led us to conformational investigations of furanosides upon their total sulfation.
Alexey G. Gerbst+6 more
doaj +1 more source