Struct SymmetrySpec 

pub struct SymmetrySpec {
    pub symmetric_subsets: Vec<Vec<usize>>,
    pub antisymmetric_subsets: Vec<Vec<usize>>,
    pub cyclic: Option<Vec<usize>>,
}

Slot symmetry for a tensor: a set of slot-index subsets that are symmetric, antisymmetric, or form a cycle.

Fields

symmetric_subsets: Vec<Vec<usize>>

Slot subsets whose members are interchangeable (symmetric).

antisymmetric_subsets: Vec<Vec<usize>>

Slot subsets whose members are antisymmetric (swap flips sign).

cyclic: Option<Vec<usize>>

Cyclic permutation on a subset of slots.

Implementations

impl SymmetrySpec

pub fn none() -> Self

No symmetry at all — every slot is independent.

pub fn fully_symmetric(rank: usize) -> Self

All slots are fully symmetric.

pub fn fully_antisymmetric(rank: usize) -> Self

All slots are fully antisymmetric.

pub fn is_slot_hidden(&self, pos: usize) -> bool

Check whether this spec implies the given slot position should have its location “hidden” in the graph encoding (i.e. not participate in canonicalisation comparison).

Trait Implementations

impl Clone for SymmetrySpec

fn clone(&self) -> SymmetrySpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SymmetrySpec

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

Formats the value using the given formatter.

impl Default for SymmetrySpec

fn default() -> SymmetrySpec

Returns the “default value” for a type.