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  2. Stability theory - Wikipedia

    en.wikipedia.org/wiki/Stability_theory

    In mathematics, stability theory addresses the stability of solutions of differential equations and of trajectories of dynamical systems under small perturbations of initial conditions. The heat equation , for example, is a stable partial differential equation because small perturbations of initial data lead to small variations in temperature ...

  3. Stability (algebraic geometry) - Wikipedia

    en.wikipedia.org/wiki/Stability_(algebraic_geometry)

    This analogy with mechanical equilibrium motivates the terminology of stability and instability. In mathematics, and especially algebraic geometry, stability is a notion which characterises when a geometric object, for example a point, an algebraic variety, a vector bundle, or a sheaf, has some desirable properties for the purpose of ...

  4. Autonomous system (mathematics) - Wikipedia

    en.wikipedia.org/.../Autonomous_system_(mathematics)

    Stability generally increases to the left of the diagram. [1] Some sink, source or node are equilibrium points. 2-dimensional case refers to Phase plane. In mathematics, an autonomous system or autonomous differential equation is a system of ordinary differential equations which does not explicitly depend on the independent variable.

  5. L-stability - Wikipedia

    en.wikipedia.org/wiki/L-stability

    Within mathematics regarding differential equations, L-stability is a special case of A-stability, a property of Runge–Kutta methods for solving ordinary differential equations.

  6. Stable group - Wikipedia

    en.wikipedia.org/wiki/Stable_group

    A group of finite Morley rank is an abstract group G such that the formula x = x has finite Morley rank for the model G.It follows from the definition that the theory of a group of finite Morley rank is ω-stable; therefore groups of finite Morley rank are stable groups.

  7. Limits of stability - Wikipedia

    en.wikipedia.org/wiki/Limits_of_stability

    Limits Of Stability (LOS) Test: This is a more advanced tool compared to FRT and is used to measure balance under multi-directional conditions. In this test, the subject stands on force plates and intentionally shifts their body weight in the cued direction.

  8. Routh–Hurwitz stability criterion - Wikipedia

    en.wikipedia.org/wiki/Routh–Hurwitz_stability...

    In the control system theory, the Routh–Hurwitz stability criterion is a mathematical test that is a necessary and sufficient condition for the stability of a linear time-invariant (LTI) dynamical system or control system. A stable system is one whose output signal is bounded; the position, velocity or energy do not increase to infinity as ...

  9. Hyers–Ulam–Rassias stability - Wikipedia

    en.wikipedia.org/wiki/Hyers–Ulam–Rassias...

    The stability problem of functional equations originated from a question of Stanisław Ulam, posed in 1940, concerning the stability of group homomorphisms.In the next year, Donald H. Hyers [1] gave a partial affirmative answer to the question of Ulam in the context of Banach spaces in the case of additive mappings, that was the first significant breakthrough and a step toward more solutions ...