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Pauls Research on Trees and Structure
This will be filled with resources and bookmarks related to trees
with recursive tree as (
  select obj,
         array[obj] as all_ancestors,
         array[knot_name] as ancestor_names
  from bounds left join knots on obj=knot_id
  where sub=1 and predicate='is_parent'

  union all

  select c.obj,
         p.ancestor_names || knot_name
  from bounds c
     join tree p
      on c.sub = p.obj
     and c.obj <> ALL (p.all_ancestors) -- avoids endless loops
     left join knots on c.obj=knot_id
select all_ancestors,ancestor_names
from tree order by all_ancestors;

Binary tree 6
Tractatus Logico-Philosophicus
Tractatus Info-Botanicus

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