1,451 zoekresultaten voor “multiple polynomial quadratic sieve” in de Publieke website

On the amount of sieving in factorization methods
Promotoren: R. Tijdeman, A.K. Lenstra, Copromotor: H.J.J. te Riele

Isogeny graphs, modular polynomials, and applications
This thesis has three main parts. The first part gives an algorithm to compute Hilbert modular polynomials for ordinary abelian varieties with maximal real multiplication. Hilbert modular polynomials of a given level b give a way of finding all of the abelian varieties that are bisogeneous to any given…

On the 16rank of class groups of quadratic number fields
Promotores: P. Stevenhagen, E. Fouvry (Univeriste Paris Saclay)

Geometric quadratic Chabauty and other topics in number theory
This thesis is is made of three parts. The first part describes a generalization of the Chabauty's method, that can be used to determine the rational points of a curve such that s+g>r+1, where g is the genusof the curve, r is the rank of the MordellWeil group of the jacobian of the curve and s is…

Complex multiplication of abelian surfaces
Promotor: Peter Stevenhagen

Universal adelic groups for imaginary quadratic number fields and elliptic curves
Promotor: Prof.dr. P. Stevenhagen & Prof.dr. K. Belabas (Univ. de Bordeaux)

Complex multiplication constructions of abelian extensions of quartic fields
In this thesis, we show that we can use Shimura’s CM theory to explicitly compute the Hilbert class field of any primitive quartic CM field.

Provinces leaky as sieves
‘We may have gone a bit overboard with protective legislation’. According to Bibi van den Berg, Professor Cybersecurity Governance at Leiden University, the sanctions that can be imposed when failing to report a data leak are so severe that organizations tend to cramp up when faced with a possible l…

Solving multiplication and division problems
Latent variable modeling of students' solution strategies and performance

Multiple star formation: chemistry, physics and coevality
Multiple stars, that is two or more stars composing a gravitationally bound system, are common in the universe.

Galaxy alignments from multiple angles
Galaxies form and live inside dark matter haloes. As a consequence, they are exposed to the tidal fields generated by the surrounding matter distribution: this imprints a preferential direction to the galaxy shapes, which leads to a coherent alignment on physically close galaxies, called intrinsic a…

CO oxidation catalysis at multiple length scales
Promotor: J.W.M. Frenken, CoPromotor: R. Felici

Algorithms for finite rings
Promotores: H.W. Lenstra, K. Belabas (University of Bordeaux)

Multiple imputation within the context of multiway analysis


Multiple Paths. Towards a Performance Practice in Computer Music
This thesis proposes multiple paths towards the development of a performance practice in Computer Music.

Decentering Gagaku. Exploring the multiplicity of contemporary Japanese Court music
Andrea Giolai defended his thesis on 3 May 2017.

The unit residue group
The unit residue group, to which the present thesis is devoted, is defined using the normresidue symbol, which Hilbert introduced into algebraic number theory in 1897.

Personalised medicine for multiple outcomes: methods and application
The main objective of this thesis was to develop clinically relevant survival models for patients with highgrade soft tissue sarcoma of the extremities, in particular the development and validation of prediction models for use in clinical practice.

Expansions of quantum group invariants
In my research, we developed a method to distinguish knots. A knot is a mathematical depiction of the everyday knot that occurs in ropes and cords.

Counting problems for number rings
Promotor: H.W. Lenstra

Triple Bioorthogonal Ligation Strategy for Simultaneous Labeling of Multiple Enzymatic Activities
Three at the same time: a ligation strategy combining tetrazine–norbornene cycloaddition, Staudinger–Bertozzi ligation, and copper(I)catalyzed click reaction was used to label the three catalytic activities of the proteasome simultaneously in a single experiment. The orthogonality of the three ligation…

The CM class number one problem for curves
Promotores: P. Stevenhagen, A. Enge CoPromotor: T.C. Streng

ASML Graduation Prize for mathematics student Pim Spelier – Incentive Prize for firstyear student Jorre The
Alumnus Pim Spelier is one of the two winners of the ASML Graduation prizes for mathematics students. He used a new method to solve single polynomial equations. Bachelor student Jorre The wins one of the ORTEC Incentive prizes for the best study results during the first year. On 30 November, the Royal…

Lost in transition? Multiple Interests in Contexts of Education, Leisure and Work
The overall aim of the project is to investigate interests and their development over time in a daily life context, with particular attention for the transition from late secondary to post secondary education, and from late post secondary education to early career.

Dynamical GibbsnonGibbs transitions: a study via coupling and large deviations
Promotores: F.H.J. Redig, W.T.F. den Hollander

Silva Nova – Restoring soil biology and soil functions to gain multiple benefits in new forests
We will study how inoculation of former arable land with soil (including the microbiome, soil fauna and seeds/rhizomes of ground flora) from old forests along with planting targeted tree species mixtures will improve productivity and more rapidly restore forestadapted communities and ulttimately result…
 Digital Workshop on Localizing the Women Peace & Security Agenda Across Multiple Governance Challenges

Interreligious Encounter in a West African City: A Study of Multiple Religious Belonging and Identity Among the Yorùbá of Ogbómòsó, Nigeria
How has interreligious encounter in Ogbómòsó created multiple religious belongings and identities among individuals and groups?

Can large carnivores like tigers survive in multiple use forests? A study in the buffer zone of Panna Tiger Reserve, India.
Which factors (humandimension and carnivore related) shape human tolerance of large carnivore and large carnivore survival in multiple use forests?

Faster number theory, safer cryptography
Developing a method to simplify polynomials in complex curves

Unraveling the mysteries of Multiple Sclerosis
Leiden chemists discovered a new mechanism which might explain how multiple sclerosis shifts to a more severe form. Their findings contribute to unravelling the mysterious course of the disease. They have published their findings in the journal Biochemistry.

Constructing elliptic curves of prescribed order
Promotor: Peter Stevenhagen

The use of activity based protein profiling to study proteasome biology
Promotor: H.S. Overkleeft, CoPromotor: B.I. Florea

Isogeny graphs, modular polynomials, and applications
Promotie

SOLVED: Login problems of multiple services
At this moment some users are experiencing problems with setting up an EduVPN connection. We are currently working on a solution.

Deterministic equation solving over finite fields
Promotor: H.W. Lenstra

On continued fraction algorithms
Promotor: Robert Tijdeman, Copromotor: Cornelis Kraaikamp

Geometric quadratic Chabauty and other topics in number theory
Promotie

NWO tenure track grant in arithmetic algebraic geometry
Within the context of the four national mathematics clusters, NWO has awarded seven proposals for tenure track positions. One of these was on 'Moduli, metrics, models, and arithmetic of Shimura varieties' by Bas Edixhoven from the Leiden Mathematical Institute.

Multiplecriteria landscapes with valleys and hills
Computer scientists from Leiden University and the University of Münster describe a new theoretical starting point for approaching difficult optimization problems. They can take into account several criteria simultaneously, instead of just one at a time.

Links between cohomology and arithmetic
Promotor: S.J. Edixhoven

On the computation of norm residue symbols
An algorithm is discussed to compute the exponential representation of principal units in a finite extension field F of the padic rationals.

Enumerative arithmetic
This thesis consists of three chapters. Each chapter is on a different subject. However, all three chapters address issues that arise in counting arithmetically interesting objects.

Thijs Bosker
Faculteit Governance and Global Affairs

Joost van Ginkel
Faculteit der Sociale Wetenschappen

NWOmultiple project for Prof. Harry Fokkens
The Netherlands Organisation of Scientific Research has honored the application of Prof. Harry Fokkens for the research project entitled

Multiple star systems: how they got here and why it matters
Disk formation around stars is an important factor in determining whether one or multiple stars evolve. But the big picture of star formation is still far from complete, says PhD researcher Nadia Murillo.

Tobler guest lecturer at the University of Vienna on the subject of multiple discrimination
During this semester, the University of Vienna offers the 19th lecture series on Gender Studies. On 21 November 2017, Christa Tobler, Professor of European Law at the Universities of Basel (Switzerland) and Leiden, gave a lecture on the subject of multiple discrimination, including also sex.

Inverse Jacobian and related topics for certain superelliptic curves
To an algebraic curve C over the complex numbers one can associate a nonnegative integer g, the genus, as a measure of its complexity.

Modular curves, Arakelov theory, algorithmic applications
Promotor: S.J. Edixhoven, Copromotor: R.S. de Jong