I like your name very much! Despite i absolutely hate math – the Calculator is the salvation 😉
The one with the red and the turn-around “L” are a bit irritating, cause my brain tries to see a half square embedded above the first three letters – Do you see it? 😉
I think, in the first one is the best readable. I personally would like it better if the “u”, the second “a”, the “o” and the the last “r” hat its “holes” painted black (and maybe something with the T) – This would look much more consistent and i think the blank letters aren’t looking nice in contrast to the ones with black.
But all of this is only a suggestion – I hope I gave you a few ideas!
Cheers
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