Lemy-isms

isomorphismes:

I hope I can say this in a way that makes sense.

One kind of mathematical symbology your eyes eventually get used to is the “Σum over all individuals” concept:

Yes, at first it’s painful, but eventually it looks no more confusing than the oddly-bent Phoenician-alphabet letters that make up English text.

I believe there is a generally worthwhile pearl of thought-magic wrapped up in the sub-i, sub-j pattern. I mean, a metaphor that’s useful for non-mathematicians to introduce into their mind-swamps.

The pearl is a certain connection between the specific and the general—a way of reaching valid generality, without dropping the specificity.

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