Algebro-geometric Approach to the Yang-Baxter Equation and Related Topics
Algorithm for the characteristics of the triple ...-functions.
Algorithme de Brill-Noether et codes de Goppa
Algorithme de multiplicativité des sommes de carrés
Algorithmetical aspects of the problem of classifying multi-projections of veronesian varieties.
Algorithmische Aspekte zur Theorie der Gröbner-Basen
Algorithmische P-Zerlegungen und Anwendungen
Algorithms for the computation of moduli spaces for semiquasihomogeneous singularities.
We present algorithms and their implementation in the computer algebra system Singular 2.0 for the computation of equations for moduli spaces for semiquasihomogeneous singularities w.r.t. right equivalence. In addition, we describe the structure of the stabilizer group of Brieskorn-Pham singularities.
All compact manifolds are homeomorphic to totally algebraic real algebraic sets.
All Congruent Numbers Less than 2000.
Allgemeine Theorie der Asymptoten der algebraischen Curven
Almost Abelian regular dessins d'enfants
A regular dessin d'enfant, in this paper, will be a pair (S,β), where S is a closed Riemann surface and β: S → ℂ̂ is a regular branched cover whose branch values are contained in the set {∞,0,1}. Let Aut(S,β) be the group of automorphisms of (S,β), that is, the deck group of β. If Aut(S,β) is Abelian, then it is known that (S,β) can be defined over ℚ. We prove that, if A is an Abelian group and Aut(S,β) ≅ A ⋊ ℤ₂, then (S,β) is also definable over ℚ. Moreover, if A ≅ ℤₙ, then we provide explicitly...
Almost Analytic Local Algebraicity of Analytic Sets and Functions.
Almost -representation. (Presque -représentations.)
Almost complex toric manifolds and positive line bundles
Almost étale extensions of Fontaine rings and log-crystalline cohomology in the semi-stable reduction case
Let be a field of characteristic zero complete for a discrete valuation, with perfect residue field of characteristic , and let be the valuation ring of . We relate the log-crystalline cohomology of the special fibre of certain affine -schemes with good or semi-stable reduction to the Galois cohomology of the fundamental group of the geometric generic fibre with coefficients in a Fontaine ring constructed from . This is based on Faltings’ theory of almost étale extensions.
Almost proper GIT-stacks and discriminant avoidance.
Almost set-theoretic complete intersections in characteristic zero.
We present a class of toric varieties V which, over any algebraically closed field of characteristic zero, are defined by codim V +1 binomial equations.
Almost-graded central extensions of Lax operator algebras
Lax operator algebras constitute a new class of infinite dimensional Lie algebras of geometric origin. More precisely, they are algebras of matrices whose entries are meromorphic functions on a compact Riemann surface. They generalize classical current algebras and current algebras of Krichever-Novikov type. Lax operators for 𝔤𝔩(n), with the spectral parameter on a Riemann surface, were introduced by Krichever. In joint works of Krichever and Sheinman their algebraic structure was revealed and...
Almost-Positiv Vector Bundles on Projective Surfaces.