Enum IntersectionResult 

pub enum IntersectionResult {
    Empty,
    Finite(u64),
    PositiveDimensional {
        dimension: usize,
        degree: Option<u64>,
    },
}

Result of a Schubert intersection computation

Contracts

• Empty: Returned when total codimension exceeds Grassmannian dimension
• Finite(n): Returned when total codimension equals Grassmannian dimension
• PositiveDimensional: Returned when total codimension is less than Grassmannian dimension

Invariant

requires: total_codim = sum of codimensions of input classes
ensures:
  - total_codim > dim(Gr) => Empty
  - total_codim == dim(Gr) => Finite(n) where n >= 0
  - total_codim < dim(Gr) => PositiveDimensional { dimension: dim(Gr) - total_codim }

Variants

Empty

Empty intersection (overdetermined)

Finite(u64)

Finite number of points

PositiveDimensional

Positive-dimensional intersection

Fields

dimension: usize

Dimension of the intersection

degree: Option<u64>

Degree (if computable)

Trait Implementations

impl Clone for IntersectionResult

fn clone(&self) -> IntersectionResult

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for IntersectionResult

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for IntersectionResult

fn default() -> IntersectionResult

Returns the “default value” for a type.

impl PartialEq for IntersectionResult

fn eq(&self, other: &IntersectionResult) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for IntersectionResult

impl StructuralPartialEq for IntersectionResult