It is not just the intersection, for filters you just put one operand after the other for an intersection [tag[A]tag[B]] is the intersection of tiddlers with tag A and tiddlers with tag B.
In set theory notation, the three operations are contains: A ⊆ B (A is a subset of B) match: A ⊆ B and B ⊆ A (A is a subset of B and B is a subset of A) overlap: A [image: \cap \!\,] B [image: \neq] [image: \varnothing \!\,] (The intersection of A and B is not the empty set) -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/3b10c83b-3330-4575-9278-5a578979be59%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

