Relationship between tensors

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SUMMARY

The discussion clarifies the relationship between tensors in differential geometry and tensor products in module theory. Tensor products were developed to create a vector space from two vector spaces U and V over a field k, resulting in a space of dimension nm. In differential geometry, tensor fields are formed by taking sections of the tensor product of the tangent bundle and cotangent bundle. Additionally, the tensor product serves as a foundational element for defining the exterior product of covectors.

PREREQUISITES
  • Understanding of vector spaces and their dimensions
  • Familiarity with differential geometry concepts
  • Knowledge of tensor products in module theory
  • Basic comprehension of tangent and cotangent bundles
NEXT STEPS
  • Study the construction of tensor products in module theory
  • Explore the properties of tangent and cotangent bundles in differential geometry
  • Learn about the exterior product of covectors and its applications
  • Investigate the role of tensors in various fields of mathematics and physics
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Mathematicians, physicists, and students of advanced mathematics seeking to understand the interplay between differential geometry and algebraic structures like tensor products.

sparkster
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Is there any relationship between tensors, as they're used in diff geo and the notion of tensor product as used in module theory? I seem to recall that tensor products were "invented" because, given a field k and U, V two vector spaces over k such that dim U=n, dim V=m, we wanted to construct a vector space with dimension nm.

But I'm not sure where tensors used the other way came from, thus my question.
 
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Yes there is, the tensor fields as used in differential geometry are constructed by taking sections of the tensor product of copies of the tangent bundle and cotangent bundle. The tensor product is also important in that it is used as a starting point to define the exterior product of covectors.
 

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