Results 1 to 10 of about 2,994 (68)

String Reconstruction from Substring Compositions [PDF]

open access: yes, 2014
Motivated by mass-spectrometry protein sequencing, we consider a simply-stated problem of reconstructing a string from the multiset of its substring compositions. We show that all strings of length 7, one less than a prime, or one less than twice a prime,
Acharya, Jayadev   +4 more
core   +1 more source

Galois theory on the line in nonzero characteristic [PDF]

open access: yes, 1992
The author surveys Galois theory of function fields with non-zero caracteristic and its relation to the structure of finite permutation groups and matrix groups.Comment: 66 pages.
Abhyankar, Shreeram S.
core   +2 more sources

Irreducible Antifield Analysis of $p$-Form Gauge Theories [PDF]

open access: yes, 1998
The irreducible antifield formalism for $p$-form gauge theories with gauge invariant interaction terms is exposed. The ghosts of ghosts do not appear.
Bizdadea, C., Saliu, S. O.
core   +2 more sources

Geometric constructibility of cyclic polygons and a limit theorem [PDF]

open access: yes, 2015
We study convex cyclic polygons, that is, inscribed $n$-gons. Starting from P. Schreiber's idea, published in 1993, we prove that these polygons are not constructible from their side lengths with straightedge and compass, provided $n$ is at least five ...
Czédli, Gábor, Kunos, Ádám
core   +2 more sources

Cyclic tridiagonal pairs, higher order Onsager algebras and orthogonal polynomials [PDF]

open access: yes, 2016
The concept of cyclic tridiagonal pairs is introduced, and explicit examples are given. For a fairly general class of cyclic tridiagonal pairs with cyclicity N, we associate a pair of `divided polynomials'. The properties of this pair generalize the ones
Baseilhac, P.   +2 more
core   +4 more sources

Symmetry algebra for the generic superintegrable system on the sphere

open access: yes, 2018
The goal of the present paper is to provide a detailed study of irreducible representations of the algebra generated by the symmetries of the generic quantum superintegrable system on the $d$-sphere.
Iliev, Plamen
core   +1 more source

Differential transcendence criteria for second-order linear difference equations and elliptic hypergeometric functions [PDF]

open access: yes, 2019
We develop general criteria that ensure that any non-zero solution of a given second-order difference equation is differentially transcendental, which apply uniformly in particular cases of interest, such as shift difference equations, q-dilation ...
Arreche, Carlos E.   +2 more
core   +5 more sources

Spindle configurations of skew lines

open access: yes, 2004
We prove a conjecture of Crapo and Penne which characterizes isotopy classes of skew configurations with spindle-structure. We use this result in order to define an invariant, spindle-genus, for spindle-configurations.
Borobia   +11 more
core   +2 more sources

The Shapovalov determinant for the Poisson superalgebras

open access: yes, 2001
Among simple Z-graded Lie superalgebras of polynomial growth, there are several which have no Cartan matrix but, nevertheless, have a quadratic even Casimir element C_{2}: these are the Lie superalgebra k^L(1|6) of vector fields on the (1|6)-dimensional ...
Bernstein J   +14 more
core   +1 more source

On twist-two operators in N=4 SYM

open access: yes, 2005
We propose a mechanism for calculating anomalous dimensions of higher-spin twist-two operators in N=4 SYM. We consider the ratio of the two-point functions of the operators and of their superconformal descendants or, alternatively, of the three-point ...
Andrianopoli   +70 more
core   +1 more source

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