FRANÇOIS GUIZOT – MYŚLICIEL I MINISTER BURŻUAZYJNEJ FRANCJI

19 April 2013 − − François

Assignment 3 François Séguin

Question 1 First, we have that λ − λ − 2 = (λ + 1)(λ − 2). Therefore, it is true that the eigenvalues of the corresponding adjacency matrix come in pairs of additive inverse. However, notice that ± √ −1 are eigenvalues, and therefore the associated matrix cannot be symmetric (there would only be real eigenvalues). We conclude that no undirected graph can have the above characteristic polynomial...

The Planck mission François

These lecture notes discuss some aspects of the Planck1 mission, whose prime objective was a very accurate measurement of the temperature anisotropies of the Cosmic Microwave Background (CMB). We announced our findings a few months ago, on March 21st , 2013. I describe some of the relevant steps we took to obtain these results, sketching the measurement process, how we processed the data to obt...

Message from the Minister

cause of mental health by creating a greater understanding of the nature of mental disorders and of the possibilities of prevention and of help for those who suffer from them. A lively and well-informed journal is invaluable for stimulating the interest of the public as a whole as well as helping people already actively engaged in work for mental health, and I wish every success to this new ven...

Mad minister disease?

Nearly ten years ago, a hitherto unknown neurological condition, bovine spongiform encephalopathy (BSE), appeared in British cows. It was labelled ‘mad cow disease’, because of the strange combination of fear and shambling gait shown by its victims. As more cases came to light, BSE was found to be similar to scrapie in sheep and it was suggested that cows were infected by eating feedstuffs cont...