Gift Days by K.-L. Winters

Worrying about weird winters

Winter is a key determinant of biological processes in temperate, alpine, and polar environments. Winters are changing, yet we currently lack the knowledge to adequately predict the impacts of climate change on winter biology, or to link winter conditions to the growing-season performance of most organisms.

Alberta Number Theory Days – L-functions

Alberta Number Theory Days fell at the very start of the newly formed PIMS CRG in Number Theory, and was thus an excellent opportunity to kickstart interactions between three of the participating institutions, the universities of Alberta, Calgary and Lethbridge. A broad range of topics in number theory were featured, but almost all talks were in areas motivated by the understanding of L-functio...

The Decays K L → l + l − l ′ + l ′ − Revisited

The double lepton pair decay modes of the KL meson are analyzed including all contributions of order p in Chiral Perturbation Theory. The experimentally established eeee mode and the recently observed eeμμ mode are discussed in detail. Typeset using REVTEX 0 In this note we reconsider the double lepton pair decays KL → llll that were studied many years ago by Miyazaki and Takasugi [1]. The two ...

Are winters getting warmer?

We examine whether any trends in monthly temperatures are the same through-out the year for various lengthy series. The data concern the world, the northern and southern hemispheres, and about three centuries of data for the United Kingdom and the Netherlands. For the empirical exercise, we rely on new and accurate tests which have been recently developed. These tests do not have standard distr...

Section K-Section L