fundamental_group

Functions

alexander_fox_matrix(G)	Compute the Fox Jacobian of the finitely presented group G.
determinant(matrix)	Compute determinant of a square matrix recursively (Laplace expansion).
fox_derivative(relator, variable[, abelize])	∂x_j/∂x_i = 1 if i == j else 0 ∂e/∂x_i = 0 ∂(uv)/∂x_i = ∂u/∂x_i + u * ∂v/∂x_i ∂(u**-1)/∂x_i = - u**-1 * ∂u/∂x_i
fundamental_group(k)	Return a presentation of the fundamental group of the complement of k in S^3.
minor(matrix, row_indices, col_indices)	Extract submatrix given selected rows and columns.
minors(matrix)
multivariable_alexander_polynomial(k)	Return the multivariate Alexander polynomial of a knot or link.