%0 Journal Article %T Logic for metric structures and the number of universal sofic and hyperlinear groups %A Martino Lupini %J Mathematics %D 2011 %I arXiv %X Using the model theory of metric structures, I give an alternative proof of the following result by Thomas: If the Continuum Hypothesis fails then there are power of the continuum many universal sofic groups up to isomorphism. This method is also applicable to universal hyperlinear groups, giving a positive answer to a question posed by Thomas. %U http://arxiv.org/abs/1111.0729v3