ir conditioning as we know it, providing thermal comfort by mechanical methods, first appeared in buildings about a hundred years ago. The ability to control temperature, humidity and air purity made urban development possible in the most inhospitable of locations. Together with electric lighting, air conditioning also eliminated restrictions on plan form and fenestration that architects had be...

In this article, we give proofs on the Arnold Lagrangian intersection conjecture on the cotangent bundles, Arnold-Givental Lagrangian intersection conjecture, the Arnold fixed point conjecture.

Jürg Arnold, Die Gewerbegerichte in Württemberg (1891 – 1927), Ostfildern: Arnold 2015. 396 S., 24 Abb. Geb. € 49,–

The Arnold-Chiari malfomation is typically associated with downbeat nystagmus. Eye movement recordings in two patients with Arnold-Chiari malfomation type 1 showed, in addition to downbeat and gaze evoked nystagmus, intermittent nystagmus of skew. To date this finding has not been reported in association with Arnold-Chiari malfomation. Nystagmus of skew should raise the suspicion of Arnold-Chia...