Tool is an artist.
Pascal Auscher is a French mathematician working at University of Paris-Sud .. University of Paris-Sud. University of Paris-Sud. Specializing in harmonic analysis and operator theory , he is mostly known for , together with Steve Hofmann , Michael Lacey , Alan McIntosh and Philippe Tchamitchian , solving the famous Kato 's conjecture .. harmonic analysis. harmonic analysis. operator theory. operator theory. Steve Hofmann. Steve Hofmann. Michael Lacey. Michael Lacey