QPA quiver (with relation)
  Relation array (obsolete if relations are detected in quiver input)
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Shorten distance between vertices connected by multple arrows may clarify the arrows.        
Output
Canvas


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Relations control
Relations:
Input format:
For quiver (with relations):
Quiver( [.. list of vertices ..], [..[src,tar,arr_name]..] ) [ ... list of relations ... ]
"Quiver()" can be omitted.
Relations must be the last array and cannot be 2-dimensional.
Relations in the "QPA Quiver code" has priority over those in "Relation code".
Relations must be in the format "(scalar1)*arrow1*arrow2*... + (scalar2)*..."
Known Limitation:
- Can only detect finite field of characteristic at most 61
- Email me (aaron dot kychan at gmail dot com) for comments and issues