Essays about: "basic density"

Showing result 1 - 5 of 79 essays containing the words basic density.

  1. 1. Low-lying zeroes of L-functions attached to modular forms

    University essay from Göteborgs universitet/Institutionen för matematiska vetenskaper

    Author : Alf Söderberg; [2024-03-22]
    Keywords : Number theory; L-functions; Modular forms; Newforms; Low-lying zeros; 1-level density; Density Conjecture; Ratios Conjecture.;

    Abstract : We study the family of L-functions attached to Hecke newforms of weight k and level N and their low-lying zeroes. First, we recall the Density Conjecture of Katz and Sarnak and how it predicts the behaviour of the low-lying zeroes of any natural family of L-functions. READ MORE

  3. 2. Image-driven simulation of brain tumors using a reaction-diffusion mathematical model

    University essay from Linköpings universitet/Avdelningen för medicinsk teknik

    Author : Kristos Qiqi; [2023]
    Keywords : brain tumor; cancer; mathematical model; simulation; magnetic resonance images; hjärntumör; cancer; matematisk model; simulering; magnetresonanstomografi bilder;

    Abstract : Brain tumors pose a big challenge in the field of neuro-oncology. Gliomas are the largest subgroup. Magnetic resonance imaging is a non-invasive tool for detecting and characterizing these tumors. Mathematical models, such as the reaction-diffusion equation, can be used for understanding the intricate behavior of gliomas. READ MORE

  4. 3. A C++ Matrix library for computing the Gateaux derivative of the Fermi-Dirac operator

    University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

    Author : William Samuelsson; [2023]
    Keywords : C ; Quantum Chemistry; Matrix functions;

    Abstract : Computing the Fermi-Dirac operator is done through recursive polynomial expansions, using the SP2 and SP2 Acc algorithms. The Gateaux derivative is computed for both schemes by mapping the zeroth and first order matrices onto a block upper triangular matrix, which is implemented in Python using Numpy arrays to store full matrices and in C++ by first constructing a basic matrix library to use as blocks in a later created block upper triangular matrix library which only directly references two blocks in a 2 x 2 block matrix. READ MORE

  5. 4. Metals for energy storage : For hydrogen and power generation

    University essay from Linköpings universitet/Konstruktionsmaterial

    Author : Oscar Torsteinsrud; Mattias Reijm; [2023]
    Keywords : Metals; Energy Storage; Round Trip Efficiency; Aluminum; Boron; Magnesium; Silicon; Zinc;

    Abstract : With an increase in energy demand and a transition from conventional fossil-driven energy generation, the world is facing a major challenge. This transition implies more intermittent energy sources whose reliance varies widely with time. To deal with this challenge, energy storage is one part of the solution. READ MORE

  6. 5. Differens i volym mellan skördardata och laserdata i slutavverkningsbestånd

    University essay from SLU/School for Forest Management

    Author : Sarah Olofsson; Felix Östlund; [2023]
    Keywords : flygburen laserskanning; fjärranalys; slutavverkningsbestånd; skördare;

    Abstract : Sedan den flygburna nationella laserskanningen påbörjades 2009 har Skogliga grunddata blivit ett viktigt verktyg för de verksamma i skogsbranschen både tidsmässigt, praktiskt och ekonomiskt. Lantmäteriet, Skogsstyrelsen och Sveriges lantbruksuniversitet påbörjade 2018 en andra nationell skanningsomgång. READ MORE