Relationship between manifolds and random variables

Click For Summary
The discussion explores the relationship between manifolds and random variables, focusing on their local versus global behavior. It raises the question of whether a differentiable function can be considered a manifold and how randomness relates to predictability. The conversation suggests that complexity and randomness may be intertwined, with both concepts exhibiting dual characteristics in local and global contexts. A distinction is made between manifolds and dynamical systems, as well as between random variables and stochastic processes, highlighting integration as a key link. Overall, the dialogue emphasizes the potential for a deeper understanding of these mathematical concepts through their interconnected behaviors.
honestrosewater
Gold Member
Messages
2,133
Reaction score
6
I am studying calculus and statistics currently, and a possible relationship between them just occurred to me. I was thinking about two things: (i) is a differentiable function from R to R a manifold, and (ii) in what way is a random event really unpredictable? So I don't know much about either one, but manifolds and random variables seem to be related by their local vs. global or short-term vs. long-term behavior. I don't know how closely complexity and randomness are related, but assume that they are closely related (or perhaps recast this in terms of information-content and description-length). It seems interesting to me that a manifold can be relatively complex/random globally/long-term but relatively simple/predictable locally/short-term, and the value of a random variable can be complex/random locally/short-term but simple/predictable globally/long-term. They seem to be duals or opposites. If you just look closely enough or long enough, they both get simple and predictable and more efficiently describable.

No? Comments? Is that a bad way to look at things?
 
Mathematics news on Phys.org
honestrosewater said:
manifolds and random variables seem to be related by their local vs. global or short-term vs. long-term behavior

It's possible you're mixing up manifolds with dynamical systems on manifolds, and random variables with stochastic processes. A more concrete link between manifolds (as topological spaces) and random variables is through integration rather than differentiation - using measure theory we can describe random events, discrete and continuous random variables and stochastic processes in a unified way.

A dynamical system can be viewed as a stochastic process where the state at a given time is conditional on certain unkown prior states - hence their behavior would be related. Does that help?
 
Here is a little puzzle from the book 100 Geometric Games by Pierre Berloquin. The side of a small square is one meter long and the side of a larger square one and a half meters long. One vertex of the large square is at the center of the small square. The side of the large square cuts two sides of the small square into one- third parts and two-thirds parts. What is the area where the squares overlap?

Similar threads

  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 45 ·
2
Replies
45
Views
6K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 66 ·
3
Replies
66
Views
7K