以上

1. Origins, structure, and basic meaning

• Structure: In 以上 (いじょう), by 以 and above 上 combine to express an inclusive threshold or conclusion.
• Basic usage: 以上 can set an inclusive lower bound after a number, or close a statement in the sense of that is all.

2. Common pitfalls and similar expressions

• Inclusive lower bound and conclusion
  • The context following 以上の or 以上で distinguishes the quantitative and concluding uses.