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# symmetricDivisorM0nbar -- create a symmetric divisor on the moduli space of stable pointed genus 0 curves

- Usage:
    `symmetricDivisorM0nbar(n,L), symmetricDivisorM0nbar(n,f)`
- Inputs:
  - n, an integer,
  - L, a list,
- Outputs:
  - D, an instance of the type SymmetricDivisorM0nbar,

## Description

A symmetric divisor on $\bar{M}_{0,n}$ may be created in either one of two ways. The user may either enter the number of marked points $n$ and a linear polynomial in the standard basis classes $B_i$, or enter $n$ and a list of the coefficients of $D$ in the standard basis. Both usages are demonstrated in the example below.

    i1 : D=symmetricDivisorM0nbar(6,{2,3})

    o1 = 2*B  + 3*B
            2      3

    o1 : S_6-symmetric divisor on M-0-6-bar

    i2 : E=symmetricDivisorM0nbar(6,2*B_2+3*B_3)

    o2 = 2*B  + 3*B
            2      3

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

    i3 : D==E

    o3 = true

## Ways to use symmetricDivisorM0nbar:

- `symmetricDivisorM0nbar(ZZ,Expression)`
- `symmetricDivisorM0nbar(ZZ,IndexedVariable)`
- `symmetricDivisorM0nbar(ZZ,List)`

## For the programmer

The object symmetricDivisorM0nbar is a method function.

The source of this document is in /build/macaulay2-88fgJW/macaulay2-1.25.11+ds/M2/Macaulay2/packages/ConformalBlocks.m2:934:0.