1.   At the age of six, he could solve complicated mathematical equations.

2.   Cowan set up a mathematical equation that represented the neural activity, and built lateral inhibition into it.

3.   Digital computers were designed for exact solutions of mathematical equations.

4.   He often walks through entire discussions performing mathematical equations without the aid of a calculator.

5.   His mind reeling with the difficult mathematical equations, he suddenly heard a soft knocking at the door.

6.   In arguing for pointillism, he quoted the scientific treatises consulted by Seurat and even printed mathematical equations.

7.   Mathematical equations lead us to physical realities.

8.   That world evolves in a clear and deterministic way, being governed by precisely formulated mathematical equations.