Edge Rewrite
// HTMLRewriter · presentation

This page was redesigned at the edge.

Cloudflare fetched the original article and streamed it through HTMLRewriter to apply an entirely new visual system without rebuilding the source page.

// request.cf · coarse context

A page that knows where it met you.

Only coarse request metadata is shown. This demo does not display or persist visitor IP addresses.

Country
US
Cloudflare location
CMH
Connection
HTTP/2
Language
Not provided

Ray ID: a234fef29dcb24d3

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Talk:Invariant

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I removed this:

In mathematics, an invariant is most generally defined to be a functor between two categories. The morphisms in the first category which are transforned to identities in the second category, are the operations you consider trivial.

Not sharp enough as a piece of category theory; and better omitted, I think.

Charles Matthews 16:12, 4 Feb 2004 (UTC)

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