Struct Tensor::Defaults¶

Defined in File tensor.hpp

Nested Relationships¶

This struct is a nested type of Class Tensor.

Struct Documentation¶

struct Defaults

the fixed library defaults used to resolve the symmetry attributes a Tensor constructor leaves unspecified

Every programmatic constructor resolves an omitted std::optional symmetry argument (or an unset TensorSymmetries field) against these; see resolve_symmetries(). They are independent of the active sequant::Context — unlike deserialization, whose corresponding defaults come from Context. There is deliberately no BraKetSymmetry default: it is derived from hermiticity and the tensor’s base_field via to_braket_symmetry().

Public Static Attributes

static constexpr Symmetry symmetry = Symmetry::Nonsymm: default bra/ket permutational Symmetry

static constexpr Hermiticity hermiticity = Hermiticity::NonHermitian: default (field-agnostic) Hermiticity; the observable BraKetSymmetry is derived from this and the tensor’s base field

static constexpr ColumnSymmetry column_symmetry = ColumnSymmetry::Nonsymm: default particle-exchange ColumnSymmetry