Triple

Target class: dynamical system
Context triple: [Smale horseshoe, instanceOf, dynamical system]

• A. tool in dynamical systems theory chosen
  A tool in dynamical systems theory is a conceptual or computational method—such as phase portraits, Lyapunov functions, or Poincaré maps—used to analyze, visualize, and understand the qualitative and quantitative behavior of dynamical systems over time.
• B. ordinary differential equation
  An ordinary differential equation is an equation involving an unknown function of a single independent variable and its derivatives, relating them through specified functional relationships.
• C. ode
  An ode is a lyrical poem, often formal and elevated in style, that expresses praise, admiration, or deep reflection on a particular subject.
• D. integrable rigid body system
  An integrable rigid body system is a mechanical model of a rigid body whose equations of motion admit enough conserved quantities to be solved exactly, typically allowing its dynamics to be expressed in terms of action-angle variables.
• E. evolution equation
  An evolution equation is a mathematical expression, typically a differential or integral equation, that describes how a system’s state changes over time according to specified dynamical rules.
• F. None of above.