# compute_ext_rays - Man Page

compute extreme rays of a tropical cone

## Description

Computes the extreme rays of a tropical cone given by a system of tropically affine inequalities.

## Arguments

- -numerical-data
Set the type of numerical data used by the algorithm, one of: ocaml_int, ocaml_float, ocaml_big_int, ocaml_big_rat, zarith_int, and zarith_rat.

- -min-plus
Use the min-plus semiring instead of the default max-plus semiring.

- -no-ordering
The constraints are not dynamically ordered during the execution.

- -polymake-output
Output under polymake format. Takes an argument, corresponding to a list c_1,...,c_p of coordinates on which the result is projected.

- -bounding-box
Set a bounding box, specified as a list (separated by commas) of triples (c:l:u), where c is the index of a coordinate, and l and u are lower and upper bounds (

**-infinity**/**+infinity**are allowed).- -help, --help
Display this list of options.

## See Also

compute_ext_rays_polar(1), compute_halfspaces(1), compute_minimal_external_representations(1), compute_tangent_hypergraph(1), compute_tropical_complex(1)

## Referenced By

compute_ext_rays_polar(1), compute_halfspaces(1), compute_minimal_external_representations(1), compute_tangent_hypergraph(1), compute_tropical_complex(1).