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# entries(MultirationalMap) -- list the defining polynomials of a rational map

- Function: entries
- Usage:
    `entries Phi`
- Inputs:
  - Phi, a multi-rational map
- Outputs:
  - a list, a doubly nested list of the defining polynomials of the map Phi

## Description

    i1 : Phi = inverse first graph segreEmbedding PP_(ZZ/13)^{1,2,1};

    o1 : MultirationalMap (birational map from PP^1 x PP^2 x PP^1 to 4-dimensional subvariety of PP^1 x PP^2 x PP^1 x PP^11)

    i2 : entries Phi

    o2 = {{x0 , x0 }, {x1 , x1 , x1 }, {x2 , x2 }, {x0 x1 x2 , x0 x1 x2 ,
             0    1      0    1    2      0    1      0  0  0    0  0  1
         ------------------------------------------------------------------------
         x0 x1 x2 , x0 x1 x2 , x0 x1 x2 , x0 x1 x2 , x0 x1 x2 , x0 x1 x2 ,
           0  1  0    0  1  1    0  2  0    0  2  1    1  0  0    1  0  1
         ------------------------------------------------------------------------
         x0 x1 x2 , x0 x1 x2 , x0 x1 x2 , x0 x1 x2 }}
           1  1  0    1  1  1    1  2  0    1  2  1

    o2 : List

## See also

- source(MultirationalMap) -- the source for a multi-rational map
- target(MultirationalMap) -- the target for a multi-rational map
- entries(RationalMap) -- the entries of the matrix associated to a rational map

## Ways to use this method:

- entries(MultirationalMap) -- list the defining polynomials of a rational map

The source of this document is in /build/macaulay2-88fgJW/macaulay2-1.25.11+ds/M2/Macaulay2/packages/MultiprojectiveVarieties.m2:2997:0.