# 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 18990: A Nonempty Vertex Set Admits the Declared Length-Zero Circuit

- ID: `q-20261014-advance-20261105-r04-eulerian-trail-0090`; number: 18990
- Processing: second_context_reviewed
- MKO: [mko-eulerian-trail](/en/mko/mko-eulerian-trail/)
- Family: [qf-mod36-euler-zero-edge-convention](/en/explore/?family=qf-mod36-euler-zero-edge-convention)
- Batch: [batch-20261014-advance-20261105-r04-eulerian-trail-foundations](/en/explore/?batch=batch-20261014-advance-20261105-r04-eulerian-trail-foundations)
- [Derivation](/en/questions/q-20261014-advance-20261105-r04-eulerian-trail-0090/) / [Markdown](/en/questions/q-20261014-advance-20261105-r04-eulerian-trail-0090/index.md) / [JSON](/data/question-derivations/questions/q-20261014-advance-20261105-r04-eulerian-trail-0090.json)