non-self-adjoint differential operator [数] 非自伴微分算子

self-adjoint differential operator [数] 自伴微分算子

formally self-adjoint differential operator 形式自伴微分算子

adjoint partial differential operator [数] 伴随偏微分算子

self-adjoint partial differential operator [数] 自伴偏微分算子

self-adjoint elliptic differential operator [数] 自伴椭圆型微分算子

self-adjoint vector differential operator 自伴向量微分算子