- Z_operators_gens() (sage.geometry.cone.ConvexRationalPolyhedralCone method)
- zero() (sage.geometry.polyhedron.parent.Polyhedra_base method)
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- zero_set() (sage.geometry.polyhedron.double_description.DoubleDescriptionPair method)
- zero_sum_projection() (in module sage.geometry.polyhedron.library)
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