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New posts in rational-numbers
prove that $2\sqrt5 +\sqrt{11}$ is irrational
algebra-precalculus
proof-writing
irrational-numbers
rational-numbers
Is this graph based on rationals familiar?
probability
graphing-functions
rational-numbers
For each irrational number $b$, does there exist an irrational number $a$ such that $a^b$ is rational?
number-theory
exponentiation
irrational-numbers
rational-numbers
Predicting the number of decimal digits needed to express a rational number
number-theory
rational-numbers
Find the sum of reciprocals of divisors given the sum of divisors
elementary-number-theory
divisibility
rational-numbers
divisor-sum
Differentiation of a function $f:\mathbb{Q}\to \mathbb{Q}$(Rational Calculus)
calculus
functions
derivatives
rational-numbers
Show that $\{1, \sqrt{2}, \sqrt{3}\}$ is linearly independent over $\mathbb{Q}$.
linear-algebra
radicals
irrational-numbers
rational-numbers
Is a non-repeating and non-terminating decimal always an irrational?
real-analysis
numerical-methods
irrational-numbers
number-systems
rational-numbers
Group $\mathbb Q^*$ as direct product/sum
abstract-algebra
group-theory
proof-verification
abelian-groups
rational-numbers
How do I rewrite -100+1/2 as the mixed number -99 1/2?
fractions
rational-numbers
A set with measure $0$ has a translate containing no rational number.
real-analysis
measure-theory
lebesgue-measure
rational-numbers
Proof that there are infinitely many positive rational numbers smaller than any given positive rational number.
proof-writing
rational-numbers
How do you find "good" rational approximations to a decimal number?
number-theory
arithmetic
divisibility
approximation
rational-numbers
Is there a function that gives the same result for a number and its reciprocal?
rational-numbers
Irreducibility of $f(x)=x^4+3x^3-9x^2+7x+27$
abstract-algebra
polynomials
irreducible-polynomials
rational-numbers
Is $ \sqrt{2000!+1}$ a rational number?
number-theory
rational-numbers
What do I study to find another description of this subset of the rationals?
recreational-mathematics
rational-numbers
Proving that if $x_1,\dots,x_n$ are rational numbers and $\sqrt{x_1}+\dots\sqrt{x_n}$ is rational, then each $\sqrt{x_i}$ is rational as well
rational-numbers
Solutions of $q=\frac{x}{y} +\frac{y}{z} + \frac{z}{x}$ s.t. $q \geq 3$
number-theory
diophantine-equations
rational-numbers
how much differential structure can we put on countable manifolds?
algebraic-geometry
differential-geometry
rational-numbers
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