For example, an important approach is to linearise the field equations.

Using this result we can write the field equation as:

Exact solutions of Einstein's field equations are very difficult to find.

He did work on Maxwell's field equations and vector analysis.

But he still needed the field equations in the theory.

In 1914 and much of 1915, Einstein was trying to create field equations based on another approach.

One can set up other field equations other than Einstein's.

I'm slow; my lips move when I solve field equations in four dimensions.

And I'm trying to put those words into positronic field equations.

Using these components, the main field equations can be written as (12.32) and.