Is it possible (or meaningful) to do analysis or calculus with rational numbers only?
68144
How far can one get in analysis without leaving $\mathbb{Q}$?
85895
Proving all rational numbers including negatives are countable
141273
When is $\sin(x)$ rational?
44573
Can $\pi$ be rational in some base radix
35261
How to use the comparison test with a series whose terms are given by a rational function?
15110
About irrational logarithms
84374
Rational function with absolute value $1$ on unit circle
140141
Arithmetic of continued fractions, does it exist?
41767
Sequence of rational numbers converging to an arbitrary irrational number $\beta$.
142000
Prove that there is an irrational number and a rational number between any two distinct real numbers
126202
Analysis Question Involving Real Numbers
136305
Is it possible? improper integral no answer?
1877
Can an irrational number raised to an irrational power be rational?
79349
The Aleph numbers and infinity in calculus.
151439
$\sqrt{1-x^2}$ is not a rational function
41841
Function with limits only at irrational points
150576
When is an Integer a Rational Number, and are All Ratios Rational, Even $\frac{\sqrt{7}}{2}$?