If you think that a woman has to meet a modesty standard that you decided on in order to participate in "nerd stuff", then you are the one with the problem.
Finite fields have multiplicative inverse only if the base is a prime, and that's what makes the rest of your usual algebra work (or not).
For example, for N = 5, 0 * 2 = 2, 1 * 2 = 2, 2 * 2 = 4, 3 * 2 = 1, 4 * 2 = 3, so the inverse of "* 2" is uniquely defined. On the other hand, for N = 4, 0 * 2 = 0, 1 * 2 = 2, 2 * 2 = 4, 3 * 2 = 2, so the inverse of "* 2" is not uniquely defined.
The author appears to mostly randomly choose from a menu of Slavic options, both wrt etymology and geography. For example “smrt” means “death” across Slavic languages, yet Czech is randomly chosen to be mentioned in the article.
Similar problems with Croatia vs Serbia vs Yugoslavia are discussed in others’ comments.
Any time you say merit-based hiring and quantifiable hiring metrics, you should realize that your best case is that you don’t add any additional bias to an already (racist, sexist, etc) biased system. And any hiring process company that doesn’t address this in their product pitch doesn’t understand the real barriers to equity in hiring today.