Symbol

Meaning

Applied in

As

ℌ

Separable Hilbert space

Model

Structured storage

ℋ

Non-separable Hilbert space, Gelfand triple

Model

Structured storage

ℜ

Reference operator

ℌ

Parameter space

ℛ

Reference operator

ℋ

Parameter space

ℭ

Embedding continuum operator

ℋ

Field, function

𝔄

Symmetry related field operator

ℋ

Field, function

𝔖

Symmetry center operator

ℌ

Floating parameter space

ℴ

Coherent swarm operator

ℌ

Dynamic location distribution

ρ

Density operator

ℋ

Density function