Aldo Tragni invented the Distributed Voting (currently the most supported by him), and the Distributed Multi-Voting variant.
He defined the IWA and Honesty criterion.
He has made this site (beta version) where it's possible to create surveys that use Distributed Voting with Cumulative voting ballot, for single and multi-winners.
He also contributed to some voting systems, creating the following diagrams that explain the procedure in a simple way:
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Other diagrams:
