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The variety of analytical classes of $$q$$-difference equations within a formal class. (La variété des classes analytiques d’équations aux $$q$$-différences dans une classe formelle.) (French) Zbl 1038.39011
Summary: We describe the structure of the affine algebraic variety of the set of analytical classes of $$q$$-difference equations within a given formal class.

##### MSC:
 39A13 Difference equations, scaling ($$q$$-differences)
##### Keywords:
affine algebraic variety; $$q$$-difference equations
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##### References:
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