Essays on Henri Poincaré

Poincaré

[En-US]

Today... today was the day. The day on which the great, the master, the professor, the sage, the doctor, the philosopher, the prophet finally rested. A hundred years have passed. Did he feel fulfilled during his lasts moments of life? We will never know. All we can do for him is cherish his memories, study his works, respect his image and burn Einstein's pictures.

Read more »

Ensaio sobre o INPE

[Pt-BR]
Finalmente resolvi escrever sobre a extraordinária viagem espacial da qual participei.
Em Fevereiro deste ano e pelo menos do ano passado, o Instituto Nacional de Pesquisas Espaciais (INPE) sediou uma Escola de Verão.

Read more »

Essays on the Shortest Path

Sentence-construction Graph

[En-US]
Do you know that old math problem asking you to find the shortest way between two cities? Well, it is content of Computer Science's Graphs area. One of the most simple problems, actually.

Read more »

Essays on Asymptotic Notations and Recurrences

Erik Demaine

[En-US] 

Oh, my, look at this professor. I wish I had classes with him. He's young, nerdish and awesome. In the video we have a very good lecture on Asymptotic Notations. The professor briefly explains the Ο (capital Omicron, also known as Big-O), Ω (capital Omega) and Θ (capital Theta) symbols. Then he shows how to solve a recurrence using them, which was new to me.

Read more »