Linear Independence and Dependence in C^d: Questions from Abbas Edalat's Notes

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Discussion Overview

The discussion revolves around the concepts of linear independence and dependence within the context of vector spaces, specifically focusing on the generalization of properties from C^2 to C^d. Participants explore definitions, properties, and examples related to these concepts in higher-dimensional complex vector spaces.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant requests definitions and properties related to the norm, inner product, dual vectors, linear independence, linear dependence, basis, and orthonormal basis in C^d.
  • Another participant questions the original poster about their attempts and the definitions in C^3, seeking clarification on their understanding.
  • A later reply expresses frustration about the lack of engagement with the initial questions and emphasizes the need for definitions in C^2.
  • One participant provides their interpretation of C^2, C^d, R^2, and R^d as dimensions of complex and real Hilbert spaces, along with a mention of the norm.

Areas of Agreement / Disagreement

There is no consensus on the definitions or properties discussed, and multiple viewpoints and requests for clarification remain unresolved.

Contextual Notes

Participants have not provided specific definitions or examples for the concepts requested, leading to a lack of clarity and understanding in the discussion.

G.F.Again
Questions from Abbas Edalat's notes
http://www.doc.ic.ac.uk/~ae/teaching.html#quantum"

It's about vector space, linear independence and linear dependence of vectors or something else.

Thanks!

Generalize the following notions and properties given for the vector space C^2 in the notes to C^d.
1) Define the norm \omega of a vector and the inner product of two vectors \omega(1) and \omega(2) in C^d. What is the dual of a vector \omega in C^d and what can it be identified with?

2) Define linear independence and linear dependence of vectors in C^d.

3) What is the least integer n such that any set of n vectors in C^d will be linearly dependent?

4) What is a basis of C^d? How many linearly independent vectors it takes to get a basis for C^d?

5) Define the notion of an orthonormal basis for C^d. What would be the standard basis of C^d?
 
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What have you tried? What are the definitions of those things in C^3?
 
I'm sorry, but I really want to say is as the file bellow. Thanks again.
 

Attachments

1. Many people will not download a "Word" document from someone they do not know.

2. I did go ahead and look at it, against my better judgement, and it adds nothing- it's just a statement of the problems. You have not responded to any of my questions: What have you tried? What are the definitions of those things in C^2?
 
Thanks anyway, HallsofIvy. I think I can do that now.
What I define the C^2, C^d, R^2, and D^d have the meaning that C^2 is a 2-dimension complex Hilbert space, and C^d a d-dimension complex Hilbert space; similarly,R^2 is a 2-dimension real space, and R^d a d-dimension real number space.And the norm \omega is the norm of omega.
 

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