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Some traits for S125 Knaster-Kuratowski fan - #1830

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s125-traits
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Some traits for S125 Knaster-Kuratowski fan#1830
prabau wants to merge 2 commits into
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s125-traits

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@prabau

@prabau prabau commented Aug 17, 2026

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Provide a justification for some of the traits of S125 that were just referencing the General Reference Chart of S&S.
Remove some redundant traits.

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Justification for this?

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Justification for this?

@prabau

prabau commented Sep 7, 2026

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P55, P66: not sure what you mean. The justification is based on corresponding meta-properties. That's what we usually do in these cases. We don't explicitly repeat the metaprops here, they are used implicitly.

@Moniker1998

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@prabau I'm not asking justification of that

@prabau

prabau commented Sep 8, 2026

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@Moniker1998 can you be more specific about what you want to see?

@Moniker1998

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Okay let's take an example.

The closed set $L(c)\cap X\subseteq X$ contains a closed set homeomorphic to {S27}.
And {S27|P55}.

@prabau what's the justification that it contains such closed set

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