Mapping the reals to the naturals
2269
Proof that the real numbers are countable: Help with why this is wrong
2198
Maps from subsets of $\mathbb{R}^2$ that are either open/closed/continuous
148239
natural deduction proof with De Morgan's laws
3217
Construction of uncountably many non-isomorphic linear (total) orderings of natural numbers
975
Is there a known well ordering of the reals?
139176
The real line is not homeomorphic to any non-trivial product space
5802
Proving the universal mapping property for polynomial rings
36139
Size of a natural transformation and the Yoneda Lemma
55509
Factor a polynomial over the reals
17022
Definable real numbers
65472
From injective map to continuous map
156660
The set of all strictly increasing sequences of natural numbers
135980
Geometric interpretation of a complex set
93776
Bijective mapping between $\mathbb{R}^2$ and $\mathbb{R}$?
135315
Proving whether a function on the set of real sequences is a metric
106736
Poincaré maps and interpretation
84686
Geometric Description Of a Set In The Complex Plane