5 June 2016

Paris, critically flooded

Paris hasn't seen so much rain for a century.  I'm visiting Université Paris Sud for a couple of weeks but I'm staying centrally, in the cinquième arrondissement. It's been raining like crazy. It feels more like February than June.  Gray skies and temperatures hovering around 13C. Many places have been closed.  The Orsay museum is closed.  The basement of the Louvre is closed. Nôtre  Dame is closed. The walkways at the Seine are flooded. The Seine boats are not operating. Water has gone through the walls of parts of the métro. The University Paris Sud was closed for a few days because of floods that affected electricity.    Here are some photos from central Paris.













T H E B O T T O M L I N E

What measure theory is about

It's about counting, but when things get too large.
Put otherwise, it's about addition of positive numbers, but when these numbers are far too many.

The principle of dynamic programming

max_{x,y} [f(x) + g(x,y)] = max_x [f(x) + max_y g(x,y)]

The bottom line

Nuestras horas son minutos cuando esperamos saber y siglos cuando sabemos lo que se puede aprender.
(Our hours are minutes when we wait to learn and centuries when we know what is to be learnt.) --António Machado

Αγεωμέτρητος μηδείς εισίτω.
(Those who do not know geometry may not enter.) --Plato

Sapere Aude! Habe Muth, dich deines eigenen Verstandes zu bedienen!
(Dare to know! Have courage to use your own reason!) --Kant