Changes between Initial Version and Version 1 of Ticket #14654, comment 19


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Timestamp:
10/31/14 21:08:01 (6 years ago)
Author:
chapoton
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  • Ticket #14654, comment 19

    initial v1  
    66> Also, since you changed the status to `needs_review`: the documentation of `DiGraph.flow_polytope` mentions a source and a sink with a non-null flow, while the function only takes one argument, i.e. the graph.... Is that normal ? `O_o`
    77
    8 Well, for quiver guys like me, a source is a vertex with only outgoing edges, and a sink with only incoming edge. Maybe you give them other names. So there is no need to provide them as arguments. Of course one needs to have as many sources as sinks for the flow polytope to make sense. Every source gets an input of 1 and every sink an output of 1.
     8Well, for quiver guys like me, a source is a vertex with only outgoing edges, and a sink with only incoming edges. Maybe you give them other names. So there is no need to provide them as arguments. Of course one needs to have as many sources as sinks for the flow polytope to make sense. Every source gets an input of 1 and every sink an output of 1.