‣ GraphFromAdjacencyMatrix( A ) | ( function ) |
If A is the adjacency matrix of a simple and directed graph, returns a Grape graph representing the graph with adjacency matrix A.
‣ WhiteheadGraphAdjacencyMatrix( G ) | ( function ) |
Returns the adjacency matrix of the Whitehead graph of the FpGroup G. Note that the Whitehead graph may not be simple.
‣ ExponentMatrixOfGroup( G ) | ( function ) |
If G is a group with m relators and n generators, it returns the m by n matrix \(A\) such that \(A_{i,j}\) is the total exponent of the generator \(g_j\) in the relator \(r_i\).
‣ ExponentMatrixOfPresentation( P ) | ( function ) |
If P is a presentation with m relators and n generators, it returns the m by n matrix \(A\) such that \(A_{i,j}\) is the total exponent of the generator \(g_j\) in the relator \(r_i\).
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