Term algebras of elementarily equivalent atom structures
arXiv:1803.11038 · doi:10.1007/s00012-018-0540-x
Abstract
We exhibit two relation algebra atom structures such that they are elementarily equivalent but their term algebras are not. This answers Problem 14.19 in the book Hirsch, R. and Hodkinson, I., "Relation Algebras by Games", North-Holland, 2002.