Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mathematics, logic Either of two laws in formal
logic which state that: - noun mathematics Either of two laws in
set theory which state that: - noun mathematics, loosely Any of various laws similar to De Morgan’s laws for set theory and logic; for example: ¬∀𝑥 𝑃(𝑥) ⇔ ∃𝑥 ¬𝑃(𝑥)
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Named after its eponym, the British mathematician and logician Augustus De Morgan (1806–1871), who first formulated the laws in formal propositional logic.
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