3 papers
math.LO2004
Continuous Fraisse Conjecture
Arnold Beckmann, Martin Goldstern, Norbert Preining
We investigate the relation of countable closed subsets of the reals with respect to continuous monotone embeddability; we show that there are exactly aleph_1 many equivalence clas…
math.RA2004
Very many term clones in a very small variety
Martin Goldstern
We give an example of a finitely based locally finite variety which has uncountably many term clones. (Such varieties were known before.)
math.RA2004
Analytic clones
Martin Goldstern
We use a method from descriptive set theory to investigate the two precomplete clones above the unary clone on a countable set.