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- Lamarckism is generally used to refer to the idea of inheritance of acquired characteristics or soft inheritance, but the idea predates Jean-Baptiste Lamarck and was not the central part of his theory of transmutation of species.
- Leibniz formula for π: The formula was first discovered by 15th-century Indian mathematician Madhava of Sangamagrama, but it is named after Gottfried Leibniz after the latter discovered it independently 300 years later.
- Lexis diagram is named after Wilhelm Lexis but was previously theorized by Gustav Zeuner and Otto Brasche.
- Linus's law: named after Linus Torvalds, but actually described by Eric S. Raymond in The Cathedral and the Bazaar.
Read more about this topic: List Of Examples Of Stigler's Law