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source(MultirationalMap) -- the source for a multi-rational map

Function: source
Usage:

source Phi
Inputs:
- Phi, a multi-rational map
Outputs:
- a multi-projective variety, the source of Phi

Description

Note that, instead, the source of a standard rational map is the coordinate ring of the source variety (this is done mainly for efficiency reasons).

See also

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

Ways to use this method:

source(MultirationalMap) -- the source for a multi-rational map

The source of this document is in MultiprojectiveVarieties.m2:2987:0.