19 citations · 78 across the 17 of their papers we have counts for
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math.GR2017
On complements of Kazhdan projections in semisimple groups
Piotr W. Nowak, Eric Reckwerdt
We prove that for an isometric representation of some groups on certain Banach spaces, the complement of the subspace of invariant vectors is 1-complemented.
math.GR2017
Certifying numerical estimates of spectral gaps
Marek Kaluba, Piotr Nowak
We establish a lower bound on the spectral gap of the Laplace operator on special linear groups using conic optimisation. In particular, this provides a constructive (but computer…