existence · state
occupancy of a window
Examples
- The International Space Station maintained orbit at 400 km for over 25 years through periodic reboosts from visiting spacecraft. engineering
- The U.S. Constitution has remained in force since 1789, structuring governance through amendments and judicial interpretation. institutions
- A superconducting magnet at CERN sustains a persistent current in a closed niobium-tin coil at 1.9 K for years. physics
Emergence
from: window
through: The range of a parameter and the structure of an opening together determine whether something is present within a bounded region.
- presence within bounds
- structural containment
- bounded persistence
Chain to foundations
as tree
- existenceL8
- windowL7
- parameterL4
- rangeL3
- boundaryL2 (shown above)
- persistL1 (shown above)
- changeL1 (shown above)
- outsideL6
- partL1 (shown above)
- windowL7
Neighborhood
Concepts that depend on this one above; what it is built from below.