# OCME · Knowledge & practice explorer

302 MKO / 1,441 families / 360 batches / 36,000 questions.

36,000 second-context math/bilingual reviewed; 0 display/symbol-checked candidates. Source questions: candidate. English: ai_candidate. No new proof, Lean, SREG or training.

1 results; page 1/1.

## Question 16786: Boundary Membership Is Not Just Membership in the Original Set

- ID: `q-20261014-advance-20261102-r04-topological-boundary-0036`; number: 16786
- Processing: second_context_reviewed
- MKO: [mko-topological-boundary](/en/mko/mko-topological-boundary/)
- Family: [qf-mod33-boundary-membership](/en/explore/?family=qf-mod33-boundary-membership)
- Batch: [batch-20261014-advance-20261102-r04-topological-boundary-foundations](/en/explore/?batch=batch-20261014-advance-20261102-r04-topological-boundary-foundations)
- [Derivation](/en/questions/q-20261014-advance-20261102-r04-topological-boundary-0036/) / [Markdown](/en/questions/q-20261014-advance-20261102-r04-topological-boundary-0036/index.md) / [JSON](/data/question-derivations/questions/q-20261014-advance-20261102-r04-topological-boundary-0036.json)