[class.copy] seems a bit lost and lonely. (Also, the final cross-reference in p1 seems like it should point to [class.copy.assign], not to [over.ass].) Does [class.copy] serve any purpose? Is there any normative weight in either of its paragraphs? (Can we just strike it?)

I think the resulting structure of [algorithms] could do with some more attention. Listing the synopsis at the top level but putting the synopsis under "Generalized numeric operations" creates an asymmetry between them. Perhaps the synopsis could be promoted to 23.8 or to 23.3, to match the synopsis in 23.2?

[numeric.ops.overview]p1 appears to be redundant now.

Otherwise, this looks great.

[class.copy] has been removed. Throughout the standard, there were 44 cross-reference to be adjusted.

[numeric.ops] as been integrated better into [algorithms]: Synopsis is a separate subclause, [numeric.ops.overview]p1 is gone, [numeric.ops.overview]p2 has been moved to [algorithms.requirements] (because the existing [alg.transform] also uses template parameters named UnaryOperation and BinaryOperation). This way, it's also very obvious that these template parameters are underspecified.

I've reordered the synopsis a bit later. We now have:

• General
• Algorithm requirements
• Parallel algorithms
• synopsis
• ( content subclauses)
• ( content subclauses)
• synopsis
• content subclause
• algorithms