conjunction
now that; since; as long as; provided that
Used to express a logical consequence or condition based on a given situation. Often follows a verb in the plain form or a noun + である. Similar to 以上は, but slightly more formal or literary.
約束した上は、必ず守ります。
Now that I have promised, I will definitely keep it.
学生である上は、勉強を第一に考えるべきだ。
As long as you are a student, you should prioritize your studies.