Math 2.0

Linear and multilinear algebra; matrix theory Linear maps Concept

Dual basis

Summary

The dual basis of a basis b1,…,bnb_1, \dots, b_n is the family of linear forms f1,…,fnf_1, \dots, f_n with fi(bj)=1f_i(b_j) = 1 when i=ji = j and 00 otherwise.

Further reading

  1. Web https://en.wikipedia.org/wiki/Dual_basis, Finite-dimensional vector spaces
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