Proving Non-Equivalence of Matrices Using Trace in Linear Algebra

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Homework Help Overview

The discussion revolves around proving the non-equivalence of matrices using the concept of trace in linear algebra. Participants are exploring the properties of subspaces and the implications of the trace function in the context of matrix equivalence classes.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning, Problem interpretation, Assumption checking

Approaches and Questions Raised

  • Participants discuss the definition of a subspace and the necessary properties to verify it. There are attempts to demonstrate closure under addition and scalar multiplication for a specific set of matrices. Questions arise regarding the implications of the trace function and how it relates to equivalence classes of matrices.

Discussion Status

Some participants have provided guidance on how to approach the proof of subspace properties and the relationship between trace and equivalence classes. There is an ongoing exploration of how to assign real numbers to equivalence classes based on their traces, with various interpretations being discussed.

Contextual Notes

Participants are navigating through definitions and properties of linear transformations, particularly focusing on the kernel and image of the trace function. There is mention of homework constraints and the need for clarity on certain mathematical concepts.

  • #31
Yes, that seems to do it! It looks like you've got it!
 
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  • #32
micromass said:
Yes, that seems to do it! It looks like you've got it!

Or it may be better to write the second one as

[A]\neq<b> \iff A \not\sim B \iff A-B \not\in U \iff \text{trace}(A-B)\neq 0 \iff \text{trace}(A)\neq\text{trace}(B)</b>
 

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