Given the 1st Postulate of SR, doesn't the 2nd Postulate go without saying?
16873
Einstein's first postulate implies the second?
29806
Can this statistic be shown not to be sufficient for $\theta$?
65895
Irrationality proofs not by contradiction
127964
Confused about the possibility of different differentiable structures.
12449
How to formulate continuum hypothesis without the axiom of choice?
100399
A doubt with a part of a certain proof.
43462
Disprove $\mathcal{P}(A\Delta B) \setminus \{\emptyset\} = \mathcal{P}(A) \Delta\mathcal{P}(B) $. Is my proof good?
157187
Why $\omega+1$ and $\omega^2$ are not cardinal numbers?
111944
Do Cantor's Theorem and the Schroder-Bernstein Theorem Contradict?
24478
What is the name of this theorem, and are there any caveats?
120517
Is it possible to prove that a particular statement cannot be disproved without creating a contradiction?
35370
Why is this proposition provable and its converse not?
73869
$\mathcal{C}_1 \subseteq \mathcal{C}_2 \implies \sigma( \mathcal{C}_1) \subseteq \sigma( \mathcal{C}_2) $
134768
Borel hierarchy doesn't "collapse" before $\omega_1$
18407
Must "first" be followed by "second"?
130865
Why is the axiom of choice separated from the other axioms?
79274
$1=2$ | Continued fraction fallacy