Renaming in an asynchronous environment
Journal of the ACM (JACM)
Unifying synchronous and asynchronous message-passing models
PODC '98 Proceedings of the seventeenth annual ACM symposium on Principles of distributed computing
The topological structure of asynchronous computability
Journal of the ACM (JACM)
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Mathematical Structures in Computer Science
New combinatorial topology upper and lower bounds for renaming
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Proceedings of the forty-first annual ACM symposium on Theory of computing
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Proceedings of the 29th ACM SIGACT-SIGOPS symposium on Principles of distributed computing
Subconsensus tasks: renaming is weaker than set agreement
DISC'06 Proceedings of the 20th international conference on Distributed Computing
Counting-based impossibility proofs for renaming and set agreement
DISC'12 Proceedings of the 26th international conference on Distributed Computing
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In the renaming problem, each process in a distributed system is issued a unique name from a large name space, and the processes must coordinate with one another to choose unique names from a much smaller name space. We show that lower bounds on the solvability of renaming in an asynchronous distributed system can be formulated as a purely topological question about the existence of an equivariant chain map from a "topological disk" to a "topological annulus". Proving the non-existence of such a map implies the non-existence of a distributed renaming algorithm in several related models of computation.