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| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Birkhoff's theorem (equational logic) | 1/1 | https://en.wikipedia.org/wiki/Birkhoff's_theorem_(equational_logic) | reference | science, encyclopedia | 2026-05-05T14:45:00.986204+00:00 | kb-cron |
In logic, Birkhoff's theorem in equational logic states that an equality t = u is a semantic consequence of a set of equalities E, if and only if t = u can be proven from the set of equalities. It is named after Garrett Birkhoff.
== References ==