Recent content by DrGreg

At least it didn't take you a degree.

That reminds me of the case of "Prawo Jazdy", a person who was listed on the Irish police computer system as someone who had committed numerous traffic offences using a variety of addresses. Until someone realised that "Prawo Jazdy" is Polish for "Driving Licence". See...

Could be the basis for a new version of "rock paper scissors".

That's easy for you to say...

I agree, there is an inconsistency in the notation.

I was brought up to use ##\sin^{-1}## etc. I think that might be a U.K. vs U.S. thing.

It never occurred to me until now that Einstein proved that a grade of ##c##+ is impossible, and as for the programming language ##c##++...

And, of course, it's not just the spatial coordinates that you need to consider, it also applies to non-inertial coordinates such as Rindler coordinates (in which an accelerating rocket is at rest) or Born coordinates (in which a rotating disk is at rest). The time-related Christoffel symbols...

An electronic version of the same piece, by the Japanese electronic music pioneer Isao Tomita.

Try imagining sheep. That might work better! :smile:

I didn't know Complan was a verb!

... or groups of linear transformations that do preserve orthogonality but don't preserve length

... and absurd (not a surd).

Math sales increase by 3.14% on Pi Day.

That's what the dinosaur said as it saw the asteroid approaching.