L’involutivite des caractéristiques des systèmes différentiels et microdifférentiels. (French) Zbl 0423.46033

Seminaire Bourbaki, Vol. 1977/78, Expose No. 522, Lect. Notes Math. 710, 277-289 (1979).


46F15 Hyperfunctions, analytic functionals
32A45 Hyperfunctions
47F05 General theory of partial differential operators
46M20 Methods of algebraic topology in functional analysis (cohomology, sheaf and bundle theory, etc.)


Zbl 0394.00006
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