No largest element of Dedekind cuts
4552
Choice of $q$ in Baby Rudin's Example 1.1
78380
Dedekind domain with a finite number of prime ideals is principal
135606
No function $f:\mathbb{Z}\rightarrow \{1, 2, 3\}$ satisfying $f(x)\ne f(y)$ for all integers $x,y$ and $|x-y|\in\{2, 3, 5\}$
24091
How many ways can $r$ nonconsecutive integers be chosen from the first $n$ integers?
131497
Maximal ideal not containing the set of powers of an element is prime
113582
How can I find an element $x\not\in\mathfrak mM_{\mathfrak m}$ for every maximal ideal $\mathfrak m$
119180
How to prove that the set $A = \left\{ {p:{p^2} < 2,p \in {\Bbb Q^+}} \right\}$ has no greatest element?
14270
Polynomial divisibility is unchanged by coeff. field extension
76506
What is the flaw of this proof (largest integer)?
122961
Upper limit for the Divisor function
52484
Sum of two Dedekind cuts is well-defined
126569
Can we find a well ordering on an infinite set with no largest element?
17991
Nonconstant polynomials do not generate maximal ideals in $\mathbb Z[x]$
537
Set of branch points isn't discrete, but branch points are isolated?
36139
Size of a natural transformation and the Yoneda Lemma
45484
Height unmixed ideal and a non-zero divisor
3208
There is no smallest rational number greater than 2