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𝔼. In DICTIOUS you will not only get to know all the dictionary meanings for the word
𝔼, but we will also tell you about its etymology, its characteristics and you will know how to say
𝔼 in singular and plural. Everything you need to know about the word
𝔼 you have here. The definition of the word
𝔼 will help you to be more precise and correct when speaking or writing your texts. Knowing the definition of
𝔼, as well as those of other words, enriches your vocabulary and provides you with more and better linguistic resources.
Translingual
Etymology
ℰ was used in this meaning as early as 1901 in William Allen Whitworth's Choice and Chance with One Thousand Exercises. The symbol came either from English expectation (or expected value), German Erwartungswert or from French espérance (“hope”); "mathematical hope" was an early name for this concept, still used in French and recognised in some other languages.
Symbol
𝔼
- (mathematics) expected value