Retrieving "Chaos/theory" from the archives

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  1. Andrew Wiles

    Linked via "chaos"

    The Galois Deformation Ring $\mathcal{R}$: Construction of rings designed to parameterize deformations of certain Galois representations associated with modular forms.
    The Serre-Tate Local Criterion: A modified version of the Serre-Tate theorem used to establish congruences between Galois representations.
    **The [Euler System of Rational Coherence](/entries/euler-syst…
  2. Critical Exponent

    Linked via "chaos"

    Non-Conventional Critical Phenomena: The $\zeta$ Exponent
    Beyond standard thermal transitions, systems exhibiting unusual relaxation dynamics, such as those near the onset of chaos or superfluid transition in disordered media, introduce additional exponents. The $\zeta$ exponent, sometimes termed the Dynamical Attenuation Exponent, governs the long-time decay of hydrodynamic modes near these non-equilibrium critical boundaries.
    The proposed form for the relaxation time $\tau$ near such a boundary is:
  3. Differential Equation

    Linked via "chaotic behavior"

    Linearity
    A differential equation is linear if the unknown function and all its derivatives appear only to the first power, and there are no products of the unknown function or its derivatives. Non-linear equations, such as the Navier-Stokes equations, often exhibit chaotic behavior or phase transitions that linear theory cannot capture.
    Solution Characteristics
  4. Differential Equations

    Linked via "Chaos"

    | Fixed Point | The system settles to a constant state. | All eigenvalues of the linearized system have negative real parts. |
    | Limit Cycle | The system oscillates indefinitely along a closed loop. | A pair of complex conjugate eigenvalues crosses the imaginary axis. |
    | Strange Attractor | Characterized by deterministic, yet aperiodic, complex trajectories. | Requires non-linear coupling and sensitive dependence on initial conditions (Chaos). |
    The geometry of a [strange attractor](/entries/strange-attractor/…
  5. Fluid Dynamics

    Linked via "chaotic"

    Navier–Stokes Equations (Momentum Conservation)
    The Navier–Stokes equations are the cornerstone of classical fluid dynamics, relating the flow acceleration to the net force per unit volume acting on the fluid element. These equations are notoriously complex due to the non-linear convective acceleration term, which is responsible for chaotic and turbulent behavior.
    The vector form for the momentum equation under the influence of a [body force](/entries/body-for…