> But I do have a mathematics background, and I don't remember ever seeing > "for x = value" used in the sense you mean.
That's so because in mathematics, "for" is spelled ":" as in {2*a* : *a*∈*Z*} If you can read the above, you should not have trouble reading {2*a* + *b* : *a*∈*Z *: *b = *1}
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