Understanding Tensor Products: From Dyads to Triads and Beyond

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SUMMARY

This discussion focuses on the computation of tensor products, specifically triad products that yield tensors of rank 3, as outlined in the document "An Introduction to Tensors for Students of Physics and Engineering." The user seeks clarification on how to compute a triad product from three vectors, U, V, and W, and requests examples to illustrate the process. Additionally, the user expresses interest in understanding "n-ad" products of vectors, which generalize the concept of triad products to higher ranks.

PREREQUISITES
  • Understanding of vector multiplication in R^3
  • Familiarity with tensor rank and tensor notation
  • Basic knowledge of dyad products and their resulting matrices
  • Concept of n-ad products in tensor algebra
NEXT STEPS
  • Learn how to compute triad products of vectors to form tensors of rank 3
  • Study examples of dyad products and their matrix representations
  • Explore the concept of n-ad products and their applications in tensor algebra
  • Review tensor operations and their significance in physics and engineering contexts
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Students and professionals in physics and engineering, particularly those interested in tensor analysis and its applications in multidimensional data representation.

Noxide
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I am reading the following document entitled: An Introduction to Tensors for Students of Physics and Engineering. This document can be found at the following link: http://www.grc.nasa.gov/WWW/k-12/Numbers/Math/documents/Tensors_TM2002211716.pdf

Specifically, I am having trouble with page 11 on the paragraph right after the bolded and centered Tensors of Rank > 2.
This paragraph states that:Tensors of rank 2 result from dyad products of vectors. (This I have no problem with, as I am familiar with this type of vector multiplication, especially in R^3. Since it produces the familiar 3x3 matrix from the product of v(v^T), with v a 1x3 vector). However, I am having problems with the next sentence which reads: In an entirely analogous way, tensors of
rank 3 arise from triad products, UVW (U,V,W vectors), and tensors of rank n arise from “n-ad” products of
vectors, UVW...AB.

I would like to know how to compute a triad product resulting in a tensor of rank 3 from 3 given vectors (an example would be great as this document does not have any). Also, if it is no trouble an example of an "n-ad" product of vectors UVW...AB would be very much appreciated but only necessary if it follows a different pattern than that of a triad product.

Thanks
 
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