Luca Carlon schrieb:
Hi! I'm writing some matrices where I put inside some quite big terms (dfracs for instance). I noticed that it is frequent that some term is too close, almost overlapping, to the element over it. Is it possible somehow to increase the vertical spacing?
You can use the commands \arraycolsep and \arraystretch. Have a look at the Math manual, section 4, that you find in LyX's Help menu.