Are terminating decimals dense in the reals?
31990
Is $\{\frac{m}{10^n}\mid m,n\in\mathbb Z,\ n\geq 0\}$ dense in $\mathbb R$?
38348
Is ECC over real numbers possible?
95289
Is this the most efficient way to round approximate integers to integers while leaving other Reals untouched?
71044
Can the square root of a real number be negative?
65624
Real vs. Floating Point vs. Money
35110
Predicting the number of decimal digits needed to express a rational number
24582
Is the set of sequences of natural numbers with trailing zeros countable?
108028
Is there a bijection between the reals and naturals?
140141
Arithmetic of continued fractions, does it exist?
127537
Is there any mathematical or physical situations that $1+2+3+\ldots\infty=-\frac{1}{12}$ shows itself?
2796
How to tell Mathematica that certain variables are real/imaginary, integer-valued, etc
29965
Proving that $m+n\sqrt{2}$ is dense in $\mathbb R$
28230
What bizarrities lurk within the decimal expansion of an irrational number?
86428
Can we show that the decimal expansion of $\pi$ doesn't occur in the decimal expansion of the Champernowne constant?
21606
Can all real numbers be represented by the sum of a convergent series?
102307
Discrete Math Proofs Involving Real Numbers
51514
Is $n \sin n$ dense on the real line?