Umbral facts for kids
Umbral is derived from the Latin umbra, meaning "shadow". It is also the Spanish and Portuguese word for "threshold", and sometimes used as a surname in that language.
Umbral may also refer to:
- Umbral calculus, the surprising similarity between seemingly unrelated polynomial equations and certain shadowy techniques used to 'prove' them
- Umbral moonshine, a mysterious connection between Niemeier lattices and Ramanujan's mock theta functions
- Francisco Umbral (1932–2007), Spanish journalist, novelist, biographer and essayist
See also
In Spanish: Umbral para niños
- Umbra (disambiguation)
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Umbral Facts for Kids. Kiddle Encyclopedia.