Supplement to "Identification of Nonseparable Triangular Models with Discrete Instruments"

This supplement discusses the link with group theory and the freeness and nonfreeness properties.  It then discusses the extension to a multivariate X. The third section gathers all proofs.

Supplemental Authors: 
D'Haultfoeuille, Xavier - CREST
Février, Philippe - CREST
Miscellaneous

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