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ConformalBlocks :: scale

scale -- reduces a list or divisor by the gcd of its coefficients

Synopsis

Description

Let D be an Sn symmetric Q-divisor on M0,n. This function reduces a symmetric divisor D by the gcd of its coefficients in the standard basis. This gives a canonical representative of each nonzero ray in Pic(M0,n)QSn.

i1 : D=symmetricDivisorM0nbar(6,288*B_2+144*B_3)

o1 = 288*B  + 144*B
          2        3

o1 : S_6-symmetric divisor on M-0-6-bar
i2 : scale(D)

o2 = 2*B  + B
        2    3

o2 : S_6-symmetric divisor on M-0-6-bar

Ways to use scale :