Quote:
Originally Posted by transistor
assume there are books with tags module theory and linear algebra simultaneously.
there is a tree with leaf abstract algebra
i want these book will automatically be listed under that leaf
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How do you map between "abstract algebra" and "module theory"+"linear algebra"? Or more general between Classification(n) and Tag(i) AND Tag(j). (And perhaps also OR and NOT.)
Can a book have more than one classification?
One calibre way to provide the mapping is to create a saved search named "abstract algebra" and in the search include the search terms ("module theory" AND "linear algebra"), if that is the intended mapping. Possibly add other combinations of tags as well to the search. This saved search with the mapping can then be used to create a virtual library, possibly with a visible tag to quickly switch to list only those books. Perhaps not the best way if you have a lot of mappings, but might be convenient for some major high level classifications like "math", "programming" and "linguistics".
You would have to prepare each mapping (search) manually. At least I don't think there is a way to create searches automatically from some form of list with mappings.
Much easier, as has been suggested above, is to tag the book with the correct classification directly. If a book has tags "module theory" and "linear algebra" add the tag "abstract algebra", possibly in a custom column called #classification. This can be done in bulk by performing searches and tag all found books for each search with the correct classification. And later, when adding new books, fill in the correct classification while you normalize other metadata.