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Macaulay2-1.3.1-8.fc15.i686.rpm

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<head><title>Cone + Cone -- computes the Minkowski sum of two cones</title>
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<div><h1>Cone + Cone -- computes the Minkowski sum of two cones</h1>
<div class="single"><h2>Synopsis</h2>
<ul><li><div class="list"><dl class="element"><dt class="heading">Usage: </dt><dd class="value"><div><tt>  C = C1 + C2</tt></div>
</dd></dl>
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</li>
<li><span>Operator: <a href="../../Macaulay2Doc/html/__pl.html" title="a unary or binary operator, usually used for addition">+</a></span></li>
<li><div class="single">Inputs:<ul><li><span><tt>C1</tt>, <span>a <a href="___Cone.html">convex rational cone</a></span></span></li>
<li><span><tt>C2</tt>, <span>a <a href="___Cone.html">convex rational cone</a></span></span></li>
</ul>
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<li><div class="single">Outputs:<ul><li><span><tt>C</tt>, <span>a <a href="___Cone.html">convex rational cone</a></span></span></li>
</ul>
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<div class="single"><h2>Description</h2>
<div><p/>
Computes the Minkowski sum of <tt>C1</tt> and <tt>C2</tt>. This is the cone 
 <tt>C1 + C2 = {x + y | x in C1, y in C2}</tt>. Note that <tt>C1</tt> and <tt>C2</tt> have 
 to lie in the same ambient space.<p/>
See also <a href="_minkowski__Sum.html" title=" computes the Minkowski sum of two convex objects">minkowskiSum</a>.<table class="examples"><tr><td><pre>i1 : C1 = posHull matrix {{1,2,3},{2,3,1},{3,1,2}}

o1 = {ambient dimension => 3           }
      dimension of lineality space => 0
      dimension of the cone => 3
      number of facets => 3
      number of rays => 3

o1 : Cone</pre>
</td></tr>
<tr><td><pre>i2 : C2 = posHull matrix {{1},{0},{0}}

o2 = {ambient dimension => 3           }
      dimension of lineality space => 0
      dimension of the cone => 1
      number of facets => 1
      number of rays => 1

o2 : Cone</pre>
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<tr><td><pre>i3 : C = C1 + C2

o3 = {ambient dimension => 3           }
      dimension of lineality space => 0
      dimension of the cone => 3
      number of facets => 4
      number of rays => 4

o3 : Cone</pre>
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<tr><td><pre>i4 : rays C

o4 = | 1 2 3 1 |
     | 0 3 1 2 |
     | 0 1 2 3 |

              3        4
o4 : Matrix QQ  &lt;--- QQ</pre>
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