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567 zoekresultaten voor “geen theory” in de Publieke website

• Hydrogen dissociation on metal surfaces Onderzoeksoutput

  Dissociative chemisorption is an important reaction step in many catalytic reactions.

• Models of curves: The Birch and Swinnerton-Dyer conjecture & ordinary reduction Onderzoeksoutput

  Chapter 1,contains the numerical verification of the Birch and Swinnerton-Dyer conjecture for hundreds of Jacobians of hyperelliptic curves of genus 2, 3, 4 and 5.

• Hydrogen dissociation on metal surfaces Onderzoeksoutput

  Promotor: G. J. Kroes

• Understanding the Surface Structure of Catalysts and 2D Materials at the Atomic Scale Onderzoeksoutput

  The work in this thesis demonstrates how to obtain an atomic-scale picture of a diverse set of complex surface structures observed using STM, under disparate conditions.

• Tautological relations and double ramification cycles with spin parity Onderzoeksoutput

  In this thesis, we address two problems concerning the tautological rings of the moduli space of curves.

• 
  Nandan Malhotra Gast onderzoeker

  Faculteit der Wiskunde en Natuurwetenschappen

• Spectral localisers and aperiodic topological phases in noncommutative geometry Onderzoeksoutput

  The dissertation offers new tools and insights to computation and modelling of topological phases, with an emphasis on the aperiodic setting.

• Aria of the Dutch North Sea Onderzoeksoutput

  Promotores: C. J. ten Cate; M. A. Ainslie. Co-promotor: W. Slabbekoorn

• On the 16-rank of class groups of quadratic number fields Onderzoeksoutput

  Promotores: P. Stevenhagen, E. Fouvry (Univeriste Paris Saclay)

• De deugden van een wetenschapper Onderzoeksoutput

  Waarom spraken negentiende-eeuwse wetenschappers zo graag over toewijding, vlijt en ijver? Waarom wijdde Robert Fruin zijn oratie aan onpartijdigheid en riep Abraham Kuenen zijn studenten op tot waarheidsliefde?

• Highly Accurate Simulations and Benchmarking of Molecule-Surface Reactions Onderzoeksoutput

  Heterogeneous catalyzed processes are highly significant to the chemical industry. Dissociative chemisorption (DC) of molecules on surfaces is always considered as a step with a high degree of rate control for heterogeneous catalysis.

• Mathematical models for mechanically induced morphogenetic pattern formation Onderzoeksoutput

  During the development of the (human) body from a single fertilized egg, organs and structures must form. The development and growth of biological forms is called morphogenesis.

• 
  Steven David Pre-PhD kandidaat

  Faculteit Governance and Global Affairs

• Geometry of Vegetation Pattern Onderzoeksoutput

  One of the effects of climate change is the phenomenon of desertification, a process that occurs in semi-arid and arid areas and causes land degradation as well as vegetation loss. Due to the lack of resources, vegetation self-organizes to sustain itself by forming large-scale spatial patterns.

• Geometric approach to evolution problems in metric spaces Onderzoeksoutput

  Promotor: S.M. Verduyn Lunel, Co-promotor: O.W. van Gaans

• Logarithmic Hochschild homology and cohomology Onderzoeksoutput

  In this thesis, we explore a Hochschild homology and cohomology-like notion for logarithmic schemes.

• Links between cohomology and arithmetic Onderzoeksoutput

  Promotor: S.J. Edixhoven

• Observing what cannot be observed: computational electrochemistry from carbon to hydrogen Onderzoeksoutput

  In this thesis, we consider various (electro)chemical phenomena at surfaces and nanoparticles and their underlying atomistic processes, which we studied using first-principles methods such as density functional theory.

• Computational aspects of class group actions and applications to post-quantum cryptography Onderzoeksoutput

  Most of current public-key cryptography is considered insecure against attacks from sufficiently powerful quantum computers. Post-quantum cryptography studies methods to secure information resistant against such attacks. One proposal is isogeny-based cryptography, which bases its security on computational…

• 
  Chenyu Shi Promovendus

  Faculteit der Wiskunde en Natuurwetenschappen

• 
  Qianpu Chen Promovendus

  Faculteit der Wiskunde en Natuurwetenschappen

• 
  Yanna van Geen Bestuur CDL

  Faculteit der Wiskunde en Natuurwetenschappen

• Development of highly accurate density functionals for H2 dissociation on transition metals Onderzoeksoutput

  Metals surfaces form a group of effective catalysts for the reaction of small molecules such as hydrogen (H2).

• The unit residue group Onderzoeksoutput

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

• The wild Brauer-Manin obstruction on K3 surfaces Onderzoeksoutput

  In this thesis, rational points on K3 surfaces are studied. In the first part of Chapter 1 the Brauer group and the the Brauer-Manin obstruction are introduced.

• Real-time foresight: preparedness for dynamic innovation networks Onderzoeksoutput

  Promotor: H.J. van den Herik, B.R. Katzy, Co-promotor: K. Sailer

• On the amount of sieving in factorization methods Onderzoeksoutput

  Promotoren: R. Tijdeman, A.K. Lenstra, Co-promotor: H.J.J. te Riele

• Sweeping vacuum gravitational waves under the rug Onderzoeksoutput

  One of the most important correlation functions in physics, especially in cosmology, is the energy density, which describes how much energy is present at each point in spacetime due to matter fields. A key contribution to the energy density of the primordial universe comes from gravitational waves (GWs),…

• Stochastic resetting and hierarchical synchronisation Onderzoeksoutput

  Stochastic resetting is simple enough to be approached analytically, yet modifies stochastic processes in a non-trivial way.

• Counting problems for number rings Onderzoeksoutput

  Promotor: H.W. Lenstra

• Complex multiplication of abelian surfaces Onderzoeksoutput

  Promotor: Peter Stevenhagen

• 
  Oisin Flynn-Connolly Onderzoeker

  Faculteit der Wiskunde en Natuurwetenschappen

• 
  Rahul Bandyopadhyay Promovendus

  Faculteit der Wiskunde en Natuurwetenschappen

• Publicaties Global Transformations and Governance Challenges

• Imperfect information variants of combinatorial games Onderzoeksoutput

  Combinatorial games are games for two competing players, moving in a turn-by-turn fashion, in which there is no chance nor hidden information⁠. Chess, checkers and the simpler tic tac toe are well-known examples of this class of games, as well as game of go⁠.

• Dual Complexes of Semistable Varieties Onderzoeksoutput

  This thesis is comprised of three chapters covering the theme of studying semistable varieties by looking at their dual combinatorial objects.

• Pollinators in complex landscapes Modelling and mapping the distribution of wild bees and hoverflies in the Netherlands Onderzoeksoutput

  This thesis explores how bees and hoverflies are distributed across the Dutch landscape and how ecological and landscape factors shape their occurrence.

• Aspects of cosmic acceleration Onderzoeksoutput

  The focus of the dissertation

• Deformations of nodal surfaces Onderzoeksoutput

  Promotores: P. Stevenhagen, L. van Geemen Co-promotor: R.M. van Luijk

• 
  Sarah Dukic Promovendus

  Faculteit der Wiskunde en Natuurwetenschappen

• 
  Björn van Zwol Promovendus

  Faculteit der Wiskunde en Natuurwetenschappen

• Ab initio molecular dynamics calculations on reactions of molecules with metal surfaces Onderzoeksoutput

  Promotor: Prof.dr. G.J. Kroes

• Topics in mathematical and applied statistics Onderzoeksoutput

  Promotor: A.W. van der Vaart

• Extension of Operators on Pre-Riesz Spaces Onderzoeksoutput

  This thesis mainly extends the theory of positive operators on Riesz spaces to a setting of pre-Riesz spaces.

• Exposed to events that never happen: Genaralized unsafety and prolonged psysiological stress responses Onderzoeksproject

  The aims of the project are to: further clarify 'inhibition by safety'; explore and describe all possible sagety factors, with a special focus on the primary human safety source: social connectedness; reviewing prolonged stress responses without stressors.

• Basis reduction for layered lattices Onderzoeksoutput

  Promotor: H.W. Lenstra

• Coherent dynamics in solar energy transduction Onderzoeksoutput

  Promotor: Prof.dr. H.J.M. de Groot, Co-promotor: Francesco Buda

• Diophantine equations in positive characteristic Onderzoeksoutput

  In this thesis three different topics in number theory are studied.

• Fermions and Bosons: Excitons in strongly correlated materials Onderzoeksoutput

  Promotors: Prof.dr. J. Zaanen, Prof.dr.ir. H. Hilgenkamp

• Aanmelding en toelating Political Theory: Legitimacy and Justice (MSc)

  Bekijk de aanmelding- en toelatingsprocedure voor Political Theory: Legitimacy and Justice (MSc) aan Universiteit Leiden: vereiste bacheloropleiding, aantal ECTS, en eventuele taal‑ of portfolio-eisen.