This is mathematically expressed by the concept of geometric continuity.

His statement of the law can be expressed mathematically as:

This can be expressed mathematically, as shown in Equation 1.

A field theory tends to be expressed mathematically by using Lagrangians.

This can be expressed mathematically in the following way:

Dalton's law can be expressed mathematically where is the partial pressure of component a and so on.

This can be expressed mathematically as where r is the rate of diffusion and d the gas density.

And all of this can be expressed mathematically rather than electrically.

The above discussion can be expressed mathematically using the quantum mechanical formulation of spin.

The thing itself cannot be pictured, it can only be expressed mathematically.