Monday, 12 August 2013

A basic question on unconstrained optimization

A basic question on unconstrained optimization

I am going through an introductory textbook on optimization where the
following is said :
"Optimization within a subspace or linear variety can often be
reformulated as unconstrained optimization, and normally optimization
within a subset that is neither subspace nor a linear variety cannot be
formulated as a unconstrained problem."
What is the meaning of this statement ?

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