Winter wonderland

Avoiding Chaos in Wonderland

Wonderland, a compact, integrated economic, demographic and environmental model is investigated using methods developed for studying critical phenomena. Simulation results show the parameter space separates into two phases, one of which contains the property of long term, sustainable development. By employing information contain in the phase diagram, an optimal strategy involving pollution taxe...

The PPACA in wonderland.

The wonderland of reflections

A fundamental fact for the algebraic theory of constraint satisfaction problems (CSPs) over a fixed template is that pp-interpretations between at most countable ω-categorical relational structures have two algebraic counterparts for their polymorphism clones: a semantic one via the standard algebraic operators H, S, P, and a syntactic one via clone homomorphisms (capturing identities). We prov...

Counterfactuals in wonderland

In a well-known, controversial paper, Professor Robert J. Aumann (1995) gave a formal presentation and a proof of the claim, that in games with perfect information, common knowledge of rationality implies that the backward induction outcome is reached. What keeps the players in Aumann’s model from deviating from the backward induction path is the following. Each player knows that if he deviates...

[Alice in Wonderland syndrome].

CASE REPORT A case of Alice in Wonderland syndrome is described as the only sign of Epstein-Barr virus infection. DISCUSSION Epstein-Barr virus infection may include visual symptoms as the first or only signs of disease. All patients presenting with a clinical picture consistent with the Alice in Wonderland syndrome should undergo serological testing for Epstein-Barr virus infection.