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On branch coq-ho
Changes not staged for commit:
	modified:   coq-ho/core_lang.v
Untracked files:
	coq-ho/Makefile
no changes added to commit (use "git add" and/or "git commit -a")
On branch coq-ho
Changes not staged for commit:
	modified:   coq-ho/core_lang.v
Untracked files:
	coq-ho/Makefile
no changes added to commit (use "git add" and/or "git commit -a")

definitions pushed through, some lemmas commented out for now.

carrier of the monoid. This now corresponds exactly to the formulation
of monoids in rose.v

and the subsequent problem with instance preference in RecDom.PCM.