interlude: a list of challenge problems.

yes, i did promise that i'd talk more about how math is going for me lately .. but i didn't say right away. q:

in the meantime, i stumbled upon this post from ars mathematica about 23 problems that D@RP@ (Defense @dvanced Research Projects @gency) has challenged the world to solve.

[PDF link]

they're rather applied sorts of problems and a few which are biological in nature, but one includes the Riemann hypothesis.