All philosophers are nerds. So, no squares are circles
32325
Can there be a valid argument which has a tautology as a conclusion?
141835
Rigorous Proof: Circle cannot be embedded into the the real line!
39189
Argue by contradiction to show that there is no surjection...
62941
1/z on an annulus has no anti-derivative
34177
Prove that $\mathbb{R}^2\setminus\mathbb{Q}^2$ is connected without path connectedness
40601
If a space $X$ has no isolated points, then nor does any dense subset of $X$.
84780
Cartesian products as sets of all functions.
53513
Why is it that in $\mathbb{F}_q \setminus 0$, there are exactly as many squares as non-squares?
89329
If a and b are relatively prime and ab is a square, then a and b are squares.
102780
No function that is continuous at all rational points and discontinuous at irrational points.
130073
$N(ab) \geq N(a)$ is not necessary for the ring to be euclidean
90473
Is circular reasoning always a fallacy?
42714
A diagram which is not the torus
2348
Show that the sphere, S, and $\mathbb{R}^2$ is not homeomorphic
91834
Useless math that became useful
100716
Zero morphism does not depend on zero object
38911
Squares in $\mathbb{Z}_p$ that are not squares in $\mathbb{Z}$