Square root of negative 1

[jvriezen]

We've got sqrt(-1) on our shirts this year:

http://www.customink.com/designs/201...m _ven=social

We've used sqrt(-1) since 2008, our rookie year, but until this year its only been one of many "special" symbols used to spell "Inconceivable"

But we've only ever competed in MN and WI.

[cadandcookies]

I might be an alumnus wearing their old shirt too. I don't know the exact context though, so that might be totally wrong.