# rationals　`def.rat`
English entry · root `../`
[in graph](../#n=def.rat)　·　[Chinese page (authoritative)](./def.rat.md)

> English: **name only** · auto-derived from the source data; the Chinese page is authoritative.

layer 9 · definition · cluster 数系的构造 (`set.numbers`) · Set Theory

## Statement and proof
Chinese only — see the Chinese page `nodes/def.rat.md` and `proofs/`.


Cite: `def.rat` (content v0.9.0) · terms: [LICENSE.txt](../LICENSE.txt)