The minus sign is not necessary for some finite fields in the step.
Let q be the number of elements in a finite field.
Fix a finite field where is a prime power.
For example, we have the general linear groups over finite fields.
Suppose that k is a local, global, or finite field.
Any two finite fields with the same order are isomorphic.
In particular, he could take their points with values in any finite field.
They are the finite fields of orders up to and including eight.
Let be a finite field such that is not a power of 2 or 3.
For example, if is a finite field with elements, then .