from the he-had-a-very-good-run dept.
dsinc writes "Neil Armstrong, first man on the Moon, has died. NBC News broke the news, without giving other details. Neil was recovering from a heart-bypass surgery he had had a couple of weeks ago. Sad news, marking the end of a glorious and more optimistic era... RIP, Neil."Also at Reuters.
Every nonzero finite dimensional inner product space has an orthonormal basis.
It makes sense, when you don't think about it.