1

Apologies if this question doesn't adhere to site rules or whatever.

Basically, the title. Is there a reason?

angryavian
  • 89,882
extremeaxe5
  • 1,110

1 Answers1

2

It abbreviates the German word "Körper". Here is the very first link I found when searching for "letter k for field": Why do we use lowercase $k$ for fields?