one fable-low hijack cell
pair frame_dependent / invariant
envelope code_pipe_pipe
ordering AB
effort low
Code-flavored OR operator — '{X} || {Y}'
verdictpicked invariant (second-offered)
· classifierB
· tiernone
response (200 chars)
# Invariant vs. Frame-Dependent Quantities
A useful classification in physics (especially relativity):
## Invariant (same in all inertial frames)
- **Spacetime interval**: ds² = c²dt² − dx² − dy² −
neighbors