Macaulay2 » Documentation
Packages » MultiprojectiveVarieties :: source(MultirationalMap)

next | previous | forward | backward | up | index | toc

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 /build/macaulay2-88fgJW/macaulay2-1.25.11+ds/M2/Macaulay2/packages/MultiprojectiveVarieties.m2:2987:0.