changeFlags(...,OneHomotopy=>...) -- strategy for moving solutions to a Schubert problem

Synopsis

Usage:

changeFlags(...,OneHomotopy=>T)
Inputs:
- T, a Boolean value, when true [default] it uses a single straight line homotopy, otherwise it makes a gradual change in the flags, one column at a time.

Description

There are two strategies: when OneHomotopy is set to true (default) it uses straight line homotopies to change flags, but assumes the initial flags are generic.

When OneHomotopy is set to false, it makes gradual changes in the flags by changing one column at a time, and using only linear homotopies, but in this setting, it generates polynomial equations using all minors of the incidence conditions (thus is not very effective).

Further information

Default value: true
Function: changeFlags -- continue solutions of a Schubert problem to another instance
Option key: OneHomotopy -- strategy for changing flags.

Functions with optional argument named OneHomotopy :