December 2011
26 posts
3 tags
On July 29th, 2011, the US Treasury Department showed that the United States had an operating cash balance of $73.3 billion USD.
At the time, Apple’s recent financial results put its reserves at $76.4 billion USD.
Apple has more money than the United States government.
(via BBC)
♥ on Ti-84
smohworld:
Isomorphismes: Things I've written that are meant... →
isomorphismes:
Er, this is probably too late for most of the students revising for exams. Sorry, I forgot that happens this time of year. I used to be a good teacher, I swear!
If it isn’t too late, I hope these short posts make useful study aids:
How to multiply matrices.
Determinant of a matrix…
Proof: isomorphismes: A beautiful depiction of a... →
isomorphismes:
A beautiful depiction of a 1-form by Robert Ghrist. You never thought understanding a 1→1-dimensional ODE would be so easy!
What his drawing makes obvious, is that images of Phase Space wear a totally different meaning than “up”, “down”, “left”, “right”. In this…
“By 2050, with a projected population of 10 billion people and without a change...”
– Earth’s Systems in Rapid Decline (via kateoplis)
Meanwhile: Debt-ceiling deal passes, wildlands, environment to suffer
(via freudianflips)
To put this in perspective a bit, if the world population lived like Americans do now, we would need 5 planet Earths to sustain consumption. Consumption...