Apparently, this user prefers to keep an air of mystery about them.
2 How to show that wedge sum is coproduct? oct 12 '12
1 How to prove that the slice category over a Quillen model category is also a Quillen model category? oct 16 '12
1 Morphism is a retraction of another morphism? oct 17 '12
1 How to prove that coequalizer is a epimorphism? oct 17 '12
0 How to show that $\Delta[n]$ isn't Kan fibrant…? oct 17 '12
0 How does the reduced cone look like? oct 20 '12