单词	Apéry's constant
释义	Apéry's constant The number , where ζ denotes the zeta function. Exact values of ζ(n), for even positive n, were determined by Euler and are rational multiples of πn. But very little is known for odd n. In 1978 Roger Apéry showed ζ(3) to be irrational, but it remains unknown whether the constant is transcendental.
随便看	existential quantifier exp expand expansion expectation expectation expected monetary value expected utility expected value experiment experimental design explanatory variable explementary angles explicit function exploratory data analysis exponent exponential decay exponential distribution exponential function exponential function to base a exponential growth exponential of a matrix exponential series exponentiate express

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