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| | pavpanchekha.com
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| | Some have thought that logic will one day be completed and all its problems solved. Now we know it is an endless task
| | bartoszmilewski.com
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| Previously: Topology as a Dietary Choice. Category theory lets us change the focus from individual objects to relationships between them. Since topology is defined using open sets, we'd start by concentrating on relations between sets. One such obvious relation is inclusion. It imposes a categorical structure on the subsets of a given set $latex X$....