The backward capital E (∃) means "there exists".
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In mathematics, a backwards "e" symbol (∃) represents the existential quantifier, which is used in mathematical logic to denote that there exists at least one element in a set that satisfies a given condition. It is often used in statements such as "There exists a real number x such that x > 0." The backwards "e" symbol is commonly used in formal mathematical proofs and logical reasoning.
What does length mean in math
In the classic equation E = mc^2, c stands for the speed of light.
Communitive means of, or belonging to, a community. It has no meaning in math. Communative does not mean anything - in math or elsewhere.
the mean is the average
What does > mean?