GQA query-group size mathematical notation

GQA query-group size is a recurring research-paper notation family. Counts how many query heads share each key-value head when query and KV head counts divide evenly.

GQA query-group size: Counts how many query heads share each key-value head when query and KV head counts divide evenly. Example: Each of eight KV heads serves four of the thirty-two query heads.