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Grassmann Algebra

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TheComplement.nb 23<br />

�4; MetricTable<br />

� METRIC<br />

� 0<br />

� l<br />

� 2<br />

� 3<br />

� 4<br />

1<br />

� 1<br />

������������<br />

0<br />

0<br />

� 0<br />

0<br />

1<br />

0<br />

0<br />

0<br />

0<br />

1<br />

0<br />

0�������������<br />

0<br />

0<br />

1�<br />

� 1<br />

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0<br />

0<br />

0<br />

0<br />

� 0<br />

0<br />

1<br />

0<br />

0<br />

0<br />

0<br />

0<br />

0<br />

1<br />

0<br />

0<br />

0<br />

0<br />

0<br />

0<br />

1<br />

0<br />

0<br />

0<br />

0<br />

0<br />

0<br />

1<br />

0<br />

0�����������������������<br />

0<br />

0<br />

0<br />

0<br />

1�<br />

� 1<br />

������������<br />

0<br />

0<br />

� 0<br />

0<br />

1<br />

0<br />

0<br />

0<br />

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� Creating palettes of induced metrics<br />

You can create a palette of all the induced metrics by declaring a metric and then entering<br />

MetricPalette.<br />

�3; DeclareMetric���; MetricPalette<br />

� METRIC<br />

� 0<br />

� l<br />

� 2<br />

� 3<br />

�����������<br />

�<br />

���������<br />

�<br />

1<br />

�1,1 �1,2 �1,3<br />

�1,2 �2,2 �2,3<br />

�1,3 �2,3 �3,3<br />

��2 1,2 � �1,1 �2,2 ��1,2 �1,3 � �1,1 �2,3 ��1,3 �2,2 � �1,2 �2,3<br />

��1,2 �1,3 � �1,1 �2,3<br />

���������<br />

�<br />

��2 1,3 � �1,1 �3,3 ��1,3 �2,3 � �1,2 �3,3<br />

��1,3 �2,2 � �1,2 �2,3 ��1,3 �2,3 � �1,2 �3,3 ��2 2,3 � �2,2 �3,3<br />

��2 1,3 �2,2 � 2 �1,2 �1,3 �2,3 � �1,1 �2 2,3 � �2 1,2 �3,3 � �1,1 �2,2 �3,3<br />

Remember that the difference between a table and a palette is that a table can be edited, whereas<br />

a palette can be clicked on to paste the contents of the cell. For example, clicking on the metric<br />

for � 3 gives:<br />

2001 4 5<br />

�����������<br />

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