Constructing a certain rational number (Rudin)
4552
Choice of $q$ in Baby Rudin's Example 1.1
42539
Theorem 3.37 in Baby Rudin: $\lim\inf\frac{c_{n+1}}{c_n}\leq\lim\inf\sqrt[n]{c_n}\leq\lim\sup\sqrt[n]{c_n}\leq \lim\sup\frac{c_{n+1}}{c_n}$
122487
Degree of Rational Function
46323
Criteria for convergent sequence (Baby Rudin Theorem 3.22)
114442
Completion of rational numbers via Cauchy sequences
84374
Rational function with absolute value $1$ on unit circle
56464
Proving the irrationality of $e^n$
147459
Find a non-constructible algebraic number of degree $4$ over $\Bbb Q$
116970
On the number divisors of a number
124448
For every real number $a$ there exists a sequence $r_n$ of rational numbers such that $r_n$ approaches $a$.
723
Is there a constructive way to exhibit a basis for $\mathbb{R}^\mathbb{N}$?
33138
Is Rational number under multiplication group?
148310
Showing rational numbers are algebraic
132931
Determining the parity of the coefficients of a quadratic given that there is a rational solution
101028
Irrational numbers and Borel Sets
139371
Sums of complex numbers - proof in Rudin's book
43268
How to prove that the set of rational numbers are countable?