Schlagwort: Bequemlichkeit

Kürzung.

Manche Anpassungen sind auch sehr spät immer noch besser als nie.

Anyany.

“Can I get anyone anything?” is a standard get-out-of-room-quick card and can be played whenever uncomfortable circumstances, ranging from mild embarrassment to major impending doom, are fast approaching. Most cultures have a variation on the “can I get anyone anything,” and they are so obviously rhetorical that they barely merit a question mark.

Eoin Colfer: And Another Thing...

Leanorris.

Hey! I heard that Lean thinks 1/0 = 0. Is that true?

Yes. So do Coq and Agda and many other theorem provers.

[...]

But doesn’t that lead to confusion?

It certainly seems to lead to confusion on Twitter. But it doesn’t lead to confusion when doing mathematics in a theorem prover. Mathematicians don’t divide by 0 and hence in practice they never notice the difference between real.div and mathematical division (for which 1/0 is undefined). Indeed, if a mathematician is asking what Lean thinks 1/0 is, one might ask the mathematician why they are even asking, because as we all know, dividing by 0 is not allowed in mathematics, and hence this cannot be relevant to their work.

Xena: Division by zero in type theory: a FAQ

Table of Fine Math.

Also, the floor can be bumpy but has to be free of steps - if the table is on a staircase, as you often find in outdoor cafes in Tuscan hill towns like San Gimignano, the math doesn't work. But then, if you are sitting on a restaurant terrace in Tuscany, who cares?

Keith Devlin: How to stabilize a wobbly table

Vogelfreifreiheit.

Any bird that has learned how to grub up a good living without being compelled to use its wings will soon renounce the privilege of flight and remain forever grounded.

Aldous Huxley: Brave New World Revisited