irrational, proving or finding counterexapmle
95787
Prove or find a counterexample: For all real numbers x and y it holds that x + y is irrational if, and only if, both x and y are irrational.
113344
How do we prove that something is unprovable?
6275
How can you prove that the square root of two is irrational?
3663
Finding counterexamples in elementary set theory.
31744
Proving that there is an irrational number between any two unequal rational numbers.
49453
Why do I have to solve for $x$ in this proof, if I choose not to find a counterexample?
107105
Is an irrational number odd or even?
63960
proving "e" irrational using convergent series
111094
Help with proving that $\pi$ is irrational
31392
Examples and Counterexamples of Relations which Satisfy Certain Properties
81428
Why does proof by contradiction not work on Rational numbers but only on Irrational numbers?
32848
Prove that the product of a non-zero rational and irrational number is irrational.
68456
Prove that there exists irrational numbers $x$ and $y$ such that $x + y$ is rational, without using subtraction
35837
How to prove that any (integer)$^{1/n}$ that isn't an integer, is irrational?
99311
Prove $2^{1/3} + 2^{2/3}$ is irrational
75204
Irrationality $\sqrt{2}$ with ideal
101162
Square root of $2$ is irrational