Intersection point between n-vector and n-sphere

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    Intersection Point
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Discussion Overview

The discussion revolves around computing the intersection point between an n-dimensional vector and an n-sphere. Participants explore the generalization of this problem from lower dimensions (2D and 3D) to n dimensions, seeking clarity on the conditions necessary for such an intersection to exist.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions the ambiguity of the original problem, noting that a vector does not necessarily intersect with a sphere unless specific conditions are met, such as the vector's origin and direction.
  • Another participant suggests that the question may refer to the intersection of an n-sphere and an n-line defined by an n-vector originating from a specific point, prompting a need for clarification on the sphere's center and the vector's origin.
  • A later reply clarifies the scenario by introducing a specific point (H) inside the n-sphere and asks about the intersection of the line from the origin through H with the n-sphere, indicating a more defined context for the discussion.

Areas of Agreement / Disagreement

Participants express differing views on the conditions necessary for the intersection to be meaningful, indicating that the discussion remains unresolved regarding the specifics of the intersection and the definitions involved.

Contextual Notes

The discussion highlights the need for precise definitions of the vector's origin and the sphere's center, as well as the implications of the vector's magnitude relative to the sphere's radius.

7toni7
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Hello,

I'm trying to compute the intersection point between a n-dimensional vector and a n-sphere.
Do you know how to perform this? is it the same than 2 and 3 dimensions?


I can't really find much information about this topic.
Thank you very much,
 
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7toni7 said:
Hello,

I'm trying to compute the intersection point between a n-dimensional vector and a n-sphere.
Do you know how to perform this? is it the same than 2 and 3 dimensions?


I can't really find much information about this topic.
Thank you very much,

what have you tried so far?
 
The statement is quite ambiguous as in general a vector doesn't need to have a common point with a sphere. Even if it's centred at the sphere's origin, its magnitude might be less than the radius of the sphere. You need to attach your vector to some point for this question to have meaning! Maybe you mean the intersection between an n-sphere and the n-line whose direction is defined by an n-vector that originates from a certain point? If so, what is the centre of the sphere, and what is the vector origin point?
 
Hello,

Sorry, I did not explain very good.

Suppose that we have one n-sphere. Inside it, we have a n-point (this point different of the origin, it is another point named H).

So, I have to compute the intersection of the line (that goes from the origin of the n-sphere passing from H) with the n-sphere. do you understand? is it possible?

Thank you in advance again,
Best.
 

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