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Questions about the properties of vector spaces and linear transformations, including linear systems in general.

7 votes
1 answer
917 views

Association scheme on injective functions

This problem arises while studying the complexity of algorithms and I am quite unfamiliar with the subject. Consider the set F of injective functions from {1..N} to {1..M} we can define an associati …
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  • 209
3 votes
1 answer
821 views

Equivalence constant between factorization norm and trace norm

The factorization norm, sometimes also called $\gamma_2$ norm play an important role in (quantum) communication complexity and is defined for a $n\times n$ matrix $A$ by: $\gamma_2(A) = \max || A \c …
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  • 209