What is the meaning of Allah's Name, al-Qayyum?

Imām Ibn al-Jawzī (d. 597/1201) summarized the scholars' opinions in his book "Zād al-Masīr" as follows:

1. It means the One who does not cease to exist, and Who is not affected by change at all. [Abū ʿUbaydah]
2. It means the One who is constant in managing the affairs of creation. [Al-Zajjāj]
3. It means the One who is ever-existing without end. [Al-Khaṭṭābī]