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

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

layer 2 · definition · cluster 一阶语言与公式 (`logic.fol`) · Mathematical Logic

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


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