Browsing by Author "Shaska, Tony"
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Curves of genus 2 with (n, n)decomposable Jacobians
Shaska, Tony (Journal of Symbolic Computation, 200105)Let C be a curve of genus 2 and ψ1: C − → E 1 a map of degree n, from C to an elliptic curveE1 , both curves defined over C. This map induces a degree n map φ1:P1 − → P 1 which we call a Frey–Kani covering. We determine ... 
Cyclic curves over the reals
Izquierdo, Milagros; Shaska, Tony (eprint arXiv:1501.01559, 20141115)In this paper we study the automorphism groups of real curves admitting a regular meromorphic function f of degree p, so called real cyclic pgonal curves. When p = 2 the automorphism groups of real hyperelliptic curves ... 
Isogenous elliptic subcovers of genus two curves
Beshaj, Lubjana; Elezi, Artur; Shaska, Tony (20171102)We prove that for $N=2,3, 5, 7$ there are only finitely many genus two curves $\X$ (up to isomorphism) defined over $\Q$ with $(2, 2)$split Jacobian and $\Aut (\X)\iso V_4$, such that their elliptic subcovers are ... 
Mësimdhënia e matematikës nëpërmjet problemeve klasike
Shaska, Tony; Shaska, Bedri (Albanian J. Math., 20161203)In this paper we discuss how teaching of mathematics for middle school and high school students can be improved dramatically when motivation of concepts and ideas is done through the classical problems and the history of ... 
On generalized superelliptic Riemann surfaces
Hidalgo, Ruben; Quispe, Saul; Shaska, Tony (eprint arXiv:1609.09576, 20161101)A closed Riemann surface X, of genus g ≥ 2, is called a generalized superelliptic curve of level n ≥ 2 if it admits an order n conformal automorphism τ so that X/hτihas genus zero and τ is central in Aut(X); the cyclic ... 
On the automorphism groups of some AGcodes based on C_{a,b} curves
Shaska, Tony; Wang, Quang (20060115)We study Ca,b curves and their applications to coding theory. Recently, Joyner and Ksir have suggested a decoding algorithm based on the automorphisms of the code. We show how Ca,b curves can be used to construct MDS ... 
Rational points in the moduli space of genus two
Shaska, Tony; Beshaj, Lubjana; Hidalgo, Ruben; Kruk, Serge; Malmendier, Andreas; Quispe, Saul (Contemporary Mathematics, 2018)We build a database of genus 2 curves defined over the field of rationals. 
Selfinversive polynomials, curves, and codes
Shaska, Tony; Joyner, David (American Mathematical Society, 20160305)We study connections between selfinversive and selfreciprocal polynomials, reduction theory of binary forms, minimal models of curves, and formally selfdual codes 
Some open problems in computational algebraic geometry.
Shaska, Tony (Albanian J. Math., 20071215)The development of computational techniques in the last decade has made possible to attack some classical problems of algebraic geometry from a computational viewpoint. In this survey, we briefly describe some open ... 
Special issue on algebra and computational algebraic geometry
Elezi, Artur; Shaska, Tony (Albanian J. Math., 200712)Algebraic geometry is one of the main branches of modern mathematics with roots from classical Italian geometers. Its modern flavor started with Grothendieck and continued with many illustrious algebraic geometers of the ... 
Thetanulls of cyclic curves of small genus
Previato, Emma; Shaska, Tony; Wijesiri, Sujeeva (Albanian J. Math., 20071215)We study relations among the classical thetanulls of cyclic curves, namely curves $\X$ (of genus $g(\X )>1$ ) with an automorphism $\s$ such that $\s$ generates a normal subgroup of the group $G$ of automorphisms, and $g ...