Japanese to English Law/Patents Law: Contract(s)

前提条件　here is the title of an Artile in an agreement.

When I hear the word "前提条件", I imagine something that is required before something else will occur. I usually use "conditions precedent" for 前提条件. However, the 前提条件s in the Agreement that I am working on now sound different.

Now, the 前提条件 described in the Agreement are as follows:

Article 1 (前提条件）
(1)　受託業務は6月6日付で発行した見積書に基づくものとする。
(2)　本契約に記載無き事項は、見積書の記載内容が適用されるものとする
(3)　本契約書と見積書において条件内容が異なる場合、本契約書の条件を適用するものとする

Do you think the above (1) - (3) can be called conditions precedent? If not, what should they be called? Maybe General provisions...I am not sure. Thank you in advance!