PTREE_EXISTS_LEAF_CONV

patriciaLib.PTREE_EXISTS_LEAF_CONV : conv

Conversion for evaluating applications of patricia$EXISTS_LEAF.

The conversion PTREE_EXISTS_LEAF_CONV evaluates terms of the form EXISTS_LEAF P t where t is a well-formed Patricia tree (constructed by patricia$Empty, patricia$Leaf and patricia$Branch) and P is predicate.

Failure

The conversion will fail if the supplied term is not a suitable application of patricia$EXISTS_LEAF.

Example

- patriciaLib.PTREE_EXISTS_LEAF_CONV ``EXISTS_LEAF (=) Empty``;
> val it = |- EXISTS_LEAF $= <{}> <=> F: thm

- patriciaLib.PTREE_EXISTS_LEAF_CONV ``EXISTS_LEAF (\x y. y = 2) (Branch 0 0 (Leaf 3 2) (Leaf 2 1))``;
> val it =
   |- EXISTS_LEAF (\x y. y = 2) (Branch 0 0 (Leaf 3 2) (Leaf 2 1)) <=> T:
   thm

- patriciaLib.PTREE_EXISTS_LEAF_CONV ``EXISTS_LEAF (\x y. y = 3) (Branch 0 0 (Leaf 3 2) (Leaf 2 1))``;
> val it =
   |- EXISTS_LEAF (\x y. y = 3) (Branch 0 0 (Leaf 3 2) (Leaf 2 1)) <=> F:
   thm

See also

patriciaLib.PTREE_CONV