Changes between Initial Version and Version 1 of Ticket #30749


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Timestamp:
10/09/20 11:00:13 (22 months ago)
Author:
chapoton
Comment:

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  • Ticket #30749 – Description

    initial v1  
    22
    33{{{
    4 sage: R.<y> = QQ[]
    5 ....: v1 = AA.polynomial_root(AA.common_polynomial(y^2 - 3), RIF(RR(1.7320508075
    6 ....: 688772), RR(1.7320508075688774)))
    7 ....: v2 = QQbar.polynomial_root(AA.common_polynomial(y^4 - y^2 + 1), CIF(RIF(RR
    8 ....: (0.8660254037844386), RR(0.86602540378443871)), RIF(-RR(0.5000000000000001
    9 ....: 1), -RR(0.49999999999999994))))
    10 ....: my_vectors = (vector(AA, [-v1, -1, 1]), vector(AA, [0, 2, 1]), vector(AA,
    11 ....: [v1, -1, 1]), vector(AA, [1, 0, 0]), vector(AA, [1/2, AA(-1/2*v2^3 + v2),
    12 ....: 0]), vector(AA, [-1/2, AA(-1/2*v2^3 + v2), 0]))
    13 ....:
     4R.<y> = QQ[]
     5v1 = AA.polynomial_root(AA.common_polynomial(y^2 - 3), RIF(RR(1.7320508075688772), RR(1.7320508075688774)))
     6v2 = QQbar.polynomial_root(AA.common_polynomial(y^4 - y^2 + 1), CIF(RIF(RR(0.8660254037844386), RR(0.86602540378443871)), RIF(-RR(0.50000000000000011), -RR(0.49999999999999994))))
     7my_vectors = (vector(AA, [-v1, -1, 1]), vector(AA, [0, 2, 1]), vector(AA,[v1, -1, 1]), vector(AA, [1, 0, 0]), vector(AA, [1/2, AA(-1/2*v2^3 + v2),0]), vector(AA, [-1/2, AA(-1/2*v2^3 + v2), 0]))
     8
     9
    1410sage: H = HyperplaneArrangements(AA,names='xyz')
    1511sage: x,y,z = H.gens()
    … …  
    1814....:     a,b,c = v
    1915....:     A = A.add_hyperplane(a*x + b*y + c*z)
    20 ....:     
    2116sage: A
    2217Arrangement of 6 hyperplanes of dimension 3 and rank 3