AngouriMath

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Written​(AngouriMath.​Entity,​AngouriMath.​Entity)

 Method (no overloads)

Summary

An answer that carries a bound name out of the binder that declared it, with that name
made writable.

Remarks

Most binders consume the name they declare — a sum over pi answers a number, and
a set builder keeps it inside itself, so both print as they were written and read back
as themselves. A derivative and an indefinite integral return it, and a variable
called pi is a thing the parser cannot produce: 2 * pi would read back as
twice the constant, which is not what it means. Renaming a bound variable is free —
it is the same function either way — so it is renamed to a name that can be written.
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