What is a stochastische dynamische systeme?

  • Context: Undergrad 
  • Thread starter Thread starter Another
  • Start date Start date
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
3 replies · 1K views
Another
Messages
104
Reaction score
5
what is stochastische dynamische systeme ?
Untitlexxxd.png
 

Attachments

  • Untitlexxxd.png
    Untitlexxxd.png
    5.8 KB · Views: 568
Physics news on Phys.org
The term "stochastic dynamical system" has a lot of different meanings. Very loosely speaking, stochastic dynamical system is a system that trajectories behave to be very complicated
 
  • Like
Likes   Reactions: Another
"Stochastic" means "random"

We can postulate the randomness directly. Alternatively, a deterministic system may appear random to us because we lack sufficiently complete knowledge of it to enable us to predict its behaviour.
 
  • Like
Likes   Reactions: Another
A typical example would be the evolution of financiel products like stock prices or derivatives. These are dynamical systems but are described by so-called Wiener processes, which are described by continuous functions which are nowhere differentiable. The resulting differential equations are not the ones you are used to, but are defined via integral equations in the so-called Ito-calculus. See e.g.

https://arxiv.org/abs/cond-mat/0408143
 
  • Like
Likes   Reactions: Another