Great design, but these feel a lot lot like an electronics company with the circuit-style design. Can you try something similar but maybe something more related to mathematics?
#63 is growing on us. Maybe bump up the font size on Technologies and put it in to the circuit below one, or you could make technologies the same size as ONE below it.
#270 is good but it seems like the N isn't the same italics format as the other letters. Maybe the down portion of the N needs to be tweaked a little to match. What do you think?
On concept #290, can you introduce a concept with curves on the font treatment. Show us one with solid lines and less curves for the "E" and the left side of the "O".