Results 1 to 10 of about 527 (52)

On reducible non-Weierstrass semigroups

open access: yesOpen Mathematics, 2021
Weierstrass semigroups are well known along the literature. We present a new family of non-Weierstrass semigroups which can be written as an intersection of Weierstrass semigroups.
García-García Juan Ignacio   +3 more
doaj   +1 more source

Ramanujan’s function k(τ)=r(τ)r2(2τ) and its modularity

open access: yesOpen Mathematics, 2020
We study the modularity of Ramanujan’s function k(τ)=r(τ)r2(2τ)k(\tau )=r(\tau ){r}^{2}(2\tau ), where r(τ)r(\tau ) is the Rogers-Ramanujan continued fraction.
Lee Yoonjin, Park Yoon Kyung
doaj   +1 more source

Strong Interactions and Stability in the DGP Model [PDF]

open access: yes, 2003
The model of Dvali, Gabadadze, and Porrati (DGP) gives a simple geometrical setup in which gravity becomes 5-dimensional at distances larger than a length scale \lambda_{DGP}. We show that this theory has strong interactions at a length scale \lambda_3 ~
A. Gruzinov   +20 more
core   +3 more sources

Riemann surfaces and AF-algebras [PDF]

open access: yes, 2015
For a generic set in the Teichmueller space, we construct a covariant functor with the range in a category of the AF-algebras; the functor maps isomorphic Riemann surfaces to the stably isomorphic AF-algebras.
Nikolaev, Igor
core   +1 more source

Modular equations of a continued fraction of order six

open access: yesOpen Mathematics, 2019
We study a continued fraction X(τ) of order six by using the modular function theory. We first prove the modularity of X(τ), and then we obtain the modular equation of X(τ) of level n for any positive integer n; this includes the result of Vasuki et al ...
Lee Yoonjin, Park Yoon Kyung
doaj   +1 more source

On cluster C*-algebras [PDF]

open access: yes, 2016
We introduce a C*-algebra A(x,Q) attached to the cluster x and a quiver Q. If Q(T) is the quiver coming from a triangulation T of the Riemann surface S with a finite number of cusps, we prove that the primitive spectrum of A(x,Q(T)) times R is ...
Nikolaev, Igor
core   +3 more sources

Belyi Function whose Grothendieck Dessin is a Flower Tree with Two Ramification Indices [PDF]

open access: yes, 2005
In this paper we present an explicit construction of Belyi functions whose dessins are flower trees (i.e., graphs of diameter 4) with two ramification indices.
Komatsu, Toru
core   +1 more source

Embeddings of infinitely connected planar domains into C^2 [PDF]

open access: yes, 2012
We prove that every circled domain in the Riemann sphere admits a proper holomorphic embedding to C^2. Our methods also apply to circled domains with punctures, provided that all but finitely many of the punctures belong to the closure of the set of ...
Erlend, Fornæss Wold, Franc Forstneric
core   +1 more source

Producing in Urgent Situations:The Management of Unpredictability in the World of Journalism [PDF]

open access: yes
Journalistic work is confronted structurally with urgent situations. Unlike other sectors using just-in-time methods, here urgency is not only the result of random failures in the production cycle, it also relates to the nature of the commodity itself ...
Pilmis, Olivier
core   +2 more sources

Almost-graded central extensions of Lax operator algebra [PDF]

open access: yes, 2011
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.
Schlichenmaier, Martin
core   +1 more source

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