In the mathematical science of the integral calculus, constant of constant seems to appear as the constants of integration of multiple integrations. For example, the indefinite double integral ∬����������=∫[∫������]����=∫[½��²+��₁]����=½∫��²����+��₁∫����+��₂=⅙��³+��₁��+��₂ here both ��₁ and ��₂ are constants of integration. However, since ��₁ is the integration constant of inner integration, it is properly called the constant of constant. Similarly, in triple indefinite integration, the constant of constant of constant can be observed as the following: ∭��������������=∬[∫������]��������=∬[½��²+��₁]��������=∫[⅙��³+��₁��+��₂]����=¼⅙��⁴+½��₁��²+��₂��+��₃, here again ��₁, ��₂, and ��₃ are the constants of integration and ��₁ is the constant of constant of constant.