substratien
Substratien is a term that appears to be a misspelling or a neologism. It does not correspond to any established concept in mathematics, computer science, linguistics, or any other recognized field of study. It is possible that "substratien" is intended to refer to "subtraction," a fundamental arithmetic operation. Subtraction involves finding the difference between two numbers. For instance, when you subtract 3 from 7, the result is 4. This operation is also represented by the minus sign (-).
Alternatively, "substratien" might be a portmanteau or a word from a fictional context. Without further clarification