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He's just a poor boy, nobody loves him.

I assume your expression of f(a+b) is , unless f is extremely simple, intended to be a good approximation ( Edit: In the Limit), to...

Kind of funny that they found in this town, the same person owns both the Spy and the Counter-Spy shops.

The formula is correct.

Related question: Let M be an ## n \times n ## constant matrix, with constant value ##c## and let ##k ## a positive Integer. Is this...

Yes, I was just reminded of it from your post.

First: Thank you all very much for these very helpful ideas. @berkeman Thank you for your very practical perspective from an economic...

I was surprised to see there are left- and right- handed socks and shoes. What's the difference?

There were rappers who wanted to rebel even more and it wasn't just the cap they wore backwards. They also put their pants on backwards...

A brisk 3-4 minutes walk occassionally. Not quite like the 10-minute brain reset, but this too Vilpas.

Thank you both. Im thinking about income decile transition matrices. If the matrix M tends to stabilize at abouth the kth iteration, I...

If you contact and address politely a prof whose work/research overlaps with your issue and make sure you know what you're talking about...