Date: Jan 19, 2014 2:53 AM
Author: Yi Wang
Subject: Re: Compact formulation of array of constraints

For this example, yo can do

Apply[And, (x[#] >= 0) & /@ Range[5]]

For example,

Assuming[(x[#] >= 0) & /@ Range[5], Simplify[Sqrt[x[2]^2]]]

On the other hand, AFAIK patterns do not work in this situation.

> Dear All,
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> How can one formulate the set of constraints
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> x[1] >= 0, x[1] >= 0, x[2] >= 0, x[3] >= 0, x[4] >= 0, x[5] >= 0
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> by using a compact form?
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> Thanks in advance,
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> Paul