未定義 undefined
Provenance
- #20 null-absence concept_map covers concept undefined
- #23 demo-alpha concept_map maps html/undefined → concept undefined
- #28 sealion-refinement concept_map covers concept undefined winning layer
Full per-leaf change history across brain builds is not yet recorded; shown is the current build's layer stack.
Across locales
What each covering migration carries for this concept, per locale — the whole-brain view, not filtered by your language. Forms are the migration's leaf values (pre-transform, pre-human-verdict); a locale without a form falls back to canonical English. Chips open that locale's live docs page for this term.
null-absence · concept undefined — per-locale forms
Expand to load the per-locale matrix.
demo-alpha · concept undefined — per-locale forms
Expand to load the per-locale matrix.
sealion-refinement · concept undefined — per-locale forms
Expand to load the per-locale matrix.
AI council review
Reviewed by 1 model
· @cf/aisingapore/gemma-sea-lion-v4-27b-it · 2026-07-17
Cluster null-absence
· locale yue
· member undefined
「未定」 effectively captures the meaning of 'undefined' as 'not yet determined', which is distinct from a deliberate absence of value represented by 'null/nil/none'.