Sökning: "elliptic"

Visar resultat 21 - 25 av 80 uppsatser innehållade ordet elliptic.

  1. 21. Scheme Theory & Weak Mordell-Weil for Elliptic Curves Over Number Fields

    Kandidat-uppsats, Lunds universitet/Matematik LTH; Lunds universitet/Matematik (naturvetenskapliga fakulteten)

    Författare :Carl-Fredrik Lidgren; [2021]
    Nyckelord :algebraic geometry; schemes; scheme theory; elliptic curves; Mordell-Weil; weak Mordell-Weil; algebraic number theory; arithmetic geometry; number theory; geometry; Mathematics and Statistics;

    Sammanfattning : We provide an introduction to scheme-theoretic algebraic geometry, which studies spaces that are in essence locally solutions to systems of polynomial equations, and prove the weak Mordell-Weil theorem. The weak Mordell-Weil theorem states that for an elliptic curve $E$ over a number field $K$, the quotient $E(K)/mE(K)$ is finite for all $m\geq 2$. LÄS MER

  3. 22. Creating a Dynamic Model of a Gas Turbine in the MVEM Framework Using an Ellipse Compressor Model

    Master-uppsats, Linköpings universitet/Fordonssystem

    Författare :Edvin Hansson; [2020]
    Nyckelord :Gas turbine; Modeling; control;

    Sammanfattning : The legislations on greenhouse gas emissions are getting tougher and tougher every year. This drives the demand for energy efficient gas turbines with as low emissions as possible. This poses the challenge to manufacturers of constructing gas turbines with lessened environmental impact, but with maintained performance. LÄS MER

  4. 23. On the Use of Elliptic Curves in Public-Key Cryptography

    Kandidat-uppsats, Lunds universitet/Matematik LTH; Lunds universitet/Matematik (naturvetenskapliga fakulteten)

    Författare :Christoph Strobl; [2020]
    Nyckelord :Elliptic Curves; Public-Key Cryptography; Index Calculus; Pohlig-Hellman; Diffie-Hellman Problem; Asymmetric Cryptography; Mathematics and Statistics;

    Sammanfattning : Uppsatsen behandlar asymmetrisk kryptering över ändliga kropper och elliptiska kurver. Elliptiska kurver införs med hjälp av affint och projektivt rum. Uppsaten också ger en introduction till algoritmer som kan knäcka diskret logaritm problemet över kropper och elliptiska kurver.. LÄS MER

  5. 24. Principal Component Analyses of Final States in Relativistic Nuclear Collisions using PYTHIA/Angantyr

    Kandidat-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Författare :Nicoline Krogh Hemme; [2020]
    Nyckelord :Relativistic Nuclear Collisions; Heavy-ion Collisions; Pythia; Angantyr; String Shoving; Colour Reconnection; Principal Component Analysis; Anisotropic Flow; Elliptic Flow; Event-by-event Fluctuations; Physics and Astronomy;

    Sammanfattning : We develop a program to perform a principal component analysis of flow fluctuations using simulations of nuclear collisions produced by the PYTHIA/Angantyr event generator. We consider both p+p and p+Pb collision events and study the leading and subleading modes of the second flow harmonic. LÄS MER

  7. 25. Context-Based Authentication and Lightweight Group Key Establishment Protocol for IoT Devices

    Master-uppsats, Mittuniversitetet/Institutionen för informationssystem och –teknologi

    Författare :Nico Ferrari; [2019]
    Nyckelord :Internet of Things; Context-based authentication; Fuzzy commitment scheme; Cryptographic key establishment; Lightweight cryptography; Contiki; One-way accumulators;

    Sammanfattning : The concept of the Internet of Things is driven by advancements of the Internet with the interconnection of heterogeneous smart objects using different networking and communication technologies. With the rapidly increasing number of interconnected devices present in the life of a person, providing authentication and secure communication between them is considered a key challenge. LÄS MER