Next we show some simple substructures of a zero vector.  All of these vector systems sum to zero vectorially.  Note that if we superpose two of these structures, all substructure vectors are still present., and the vector summation is still zero.
      Also notice that, from the standpoint of substructuring, zeros can be and are drastically different.
      We can even make rhythmic waves in the substructure by superposing patterned zero vectors in a regular fashion.

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