Results 11 to 20 of about 554 (70)
A Fast Approach to Creative Telescoping [PDF]
In this note we reinvestigate the task of computing creative telescoping relations in differential-difference operator algebras. Our approach is based on an ansatz that explicitly includes the denominators of the delta parts.
Koutschan, Christoph
core +2 more sources
On the rank of $n\times n$ matrix multiplication [PDF]
For every $p\leq n$ positive integer we obtain the lower bound $(3-\frac{1}{p+1})n^2-\big(2\binom{2p}{p+1}-\binom{2p-2}{p-1}+2\big)n$ for the rank of the $n\times n$ matrix multiplication. This bound improves the previous one $(3-\frac{1}{p+1})n^2-\big(1+
Massarenti, Alex, Raviolo, Emanuele
core +2 more sources
The (3 + 1)-dimensional variable-coefficient B-type Kadomtsev-Petviashvili equation is studied by using the Hirota bilinear method and the graphical representations of the solutions.
Ding Guo +3 more
semanticscholar +1 more source
Finite-dimensional Zinbiel algebras and combinatorial structures
In this paper, we study the link between finite-dimensional Zinbiel algebras and combinatorial structures or (pseudo)digraphs determining which configurations are associated with those algebras.
Ceballos Manuel +2 more
doaj +1 more source
A note on minimal resolutions of vector–spread Borel ideals
We consider vector–spread Borel ideals. We show that these ideals have linear quotients and thereby we determine the graded Betti numbers and the bigraded Poincaré series.
Crupi Marilena, Ficarra Antonino
doaj +1 more source
Quantum computation of discrete logarithms in semigroups
We describe an efficient quantum algorithm for computing discrete logarithms in semigroups using Shor's algorithms for period finding and the discrete logarithm problem as subroutines.
Childs Andrew M., Ivanyos Gábor
doaj +1 more source
The short resolution of a semigroup algebra [PDF]
This work generalizes the short resolution given in Proc. Amer. Math. Soc. \textbf{131}, 4, (2003), 1081--1091, to any affine semigroup. Moreover, a characterization of Ap\'{e}ry sets is given.
Ojeda, Ignacio +1 more
core +3 more sources
On the resolvent of an ideal and some applications
We give an algorithm to compute a resolvent of an algebraic variety without computing its irreducible components; we decompose the radical of an ideal into prime ideals and we test the primality of a regular ideal.
Driss Bouziane, Abdelilah Kandri Rody
wiley +1 more source
Classification of Filiform Lie Algebras up to dimension 7 Over Finite Fields
This paper tries to develop a recent research which consists in using Discrete Mathematics as a tool in the study of the problem of the classification of Lie algebras in general, dealing in this case with filiform Lie algebras up to dimension 7 over ...
Falcón Óscar J. +4 more
doaj +1 more source
Analysis of a certain polycyclic-group-based cryptosystem
We investigate security properties of the Anshel–Anshel–Goldfeld commutator key-establishment protocol [Math. Res. Lett. 6 (1999), 287–291] used with certain polycyclic groups described by Eick and Kahrobaei [http://arxiv.org/abs/math.GR/0411077].
Kotov Matvei, Ushakov Alexander
doaj +1 more source

