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April 22, 2010 / porton

A counterexample: Funcoid corresponding to outer reloid

I found a counter-example to the following conjecture.

Conjecture (\mathsf{FCD}) (\mathsf{RLD})_{\mathrm{out}} f = f for every funcoid f.

The counterexample is f = {(=)}|_{\Omega} where \Omega is the Fréchet filter.

See Algebraic General Topology and in particular Funcoids and Reloids online article, the section Some counter-examples for this counterexample.

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