“Counterexample”的概念、定义、习题解题方法及翻译-数学辞典

单词	Counterexample
释义	counterexample A counterexample is an example which is used to prove that a statement is false. For instance, to disprove that the statement “For all $n$ , $2^{2^{n}}+1$ is prime.”, one could exhibit $5$ as a counterexample; since $2^{2^{5}}+1=641\\times 6700417$ , the statement is false.
随便看	proof that η⁢(1)=l⁢n2 proof that τ⁢(n) is the number of positive divisors of n proof that ω has the tree property ProofTheOrbitOfAnyElementOfAGroupIsASubgroup Proof: The orbit of any element of a group is a subgroup ProofToCauchyRiemannEquationspolarCoordinates proof to Cauchy-Riemann equations (polar coordinates) ProperCone proper cone ProperDivisor proper divisor ProperIdeal proper ideal ProperlyDiscontinuousAction properly discontinuous action ProperMap proper map ProperMappingTheorem proper mapping theorem ProperSubgroup proper subgroup ProperSubset proper subset ProperSubspacesOfATopologicalVectorSpaceHaveEmptyInterior proper subspaces of a topological vector space have empty interior

数学辞典收录了18232条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。

counterexample