Her cursed technique is mass, when geto got hit by "mass", he states that if the density of bom ba ye had no limit it can create a black hole.
Before the fight starts, Geto states that the mass exposed by yuki was so overwhelming to a point that its concept couldn't be contained semantically or pragmatically.
What the author means by semantically and pragmatically, is that the virtual mass in both fields is undefinable
Semantically means that it cannot be conceptualized by words.
Pragmatically essentially is a way of thinking in numerical values/terms/definitions meaning that being undefined pragmatically refers to something that in a numerical way its undefinable.
Before the fight starts, Geto states that the mass exposed by yuki was so overwhelming to a point that its concept couldn't be contained semantically or pragmatically.
What the author means by semantically and pragmatically, is that the virtual mass in both fields is undefinable
Semantically means that it cannot be conceptualized by words.
Pragmatically essentially is a way of thinking in numerical values/terms/definitions meaning that being undefined pragmatically refers to something that in a numerical way its undefinable.