Saying hi from Singapore :)

I don't really know much, but that doesn't stop me from reading and answering questions here. Sometimes I get things right, and other times I get them wrong. Thankfully, the former is more common.

I also frequently ask questions that are of interest to me, and oftentimes people here are able to solve it or at least contribute significantly towards solving it. Some of my better questions include:

• Are these square matrices always diagonalisable?
• A continuous curve intersects its 90 degrees rotated copy?
• On determinants of a certain class of matrices
• How long does it take for a sequence to obtain this loop?
• Is there a natural group of subgroups of a group?

As you might be able to tell from the above, I'm mainly interested in problems with a number theory or linear algebra flavour, although I do look at other things too.