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Vanilla 1.1.10 is a product of Lussumo. More Information: Documentation, Community Support.
New article: cofinality, with the basic case being the cofinality of a quasiorder as a collection of cardinal numbers, a variation as a collection of ordinal numbers (or equivalently an ordinal number), and an apparently separate case of the cofinality of a collection of cardinal numbers, all of these tied together and interpreted as a single cardinal number if one assumes the axiom of choice.
Nice!
Thanks! I fixed a couple of errors.
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