Les systèmes en treillis ou réticulés sont des structures composées de barres articulées entres-elles à leurs extrémités. Les articulations communes à plusieurs barres sont les nœuds du système. Ce type de structures en charpente métallique ou en bois.


Complex analysis is a branch of mathematics that deals with complex numbers, their functions, and their calculus. In simple terms, complex analysis is an extension of the calculus of real numbers to the complex domain. We will extend the notions of continuity, derivatives, and integrals, familiar from calculus to the case of complex functions of a complex variable. In doing so we will come across analytic functions, which form the centerpiece of this introduction. In fact, to a large extent complex analysis is the study of analytic functions.

What is Numerical Method?

  • In reality,“Solving a math problem” generally involves finding an answer rather than exact answer.
  • Numerical analysis is the study of algorithms that use numerical approximation for the problems of mathematical analysis.
  • A numerical method is a complete and definite set of procedures for the solution of a problem, together with computable error estimates. The study and implementation of such methods is the field of numerical analysis / numerical methods.
  • A trick that lets you get closer and closer to an exact answer is a “numerical method”.
  • Numerical methods find solutions close to the answer without ever knowing what that answer is. As such, an important part of every numerical method is a proof that it works.