### The Maxima on-line user's manual

Algebra Calculator

#### Einstein

Function: einstein (<dis>) A function in the `ctensor` (component tensor) package. `einstein` computes the mixed Einstein tensor after the Christoffel symbols and Ricci tensor have been obtained (with the functions `christof` and `ricci`). If the argument <dis> is `true`, then the non-zero values of the mixed Einstein tensor `ein[i,j]` will be displayed where `j` is the contravariant index. The variable `rateinstein` will cause the rational simplification on these components. If `ratfac` is `true` then the components will also be factored.

There are also some inexact matches for `einstein`. Try `?? einstein` to see them.

```(%o1)                                true
(%i2) ```

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