Lazard Lie category

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Definition

As the category of Lazard Lie rings

The Lazard Lie category can be defined as the following concrete category:

Item Value
Objects Lazard Lie rings, i.e., Lie rings for which there exists a finite c such that the Lie ring has 3-local class at most c and is powered over all primes \le c.
Morphisms Lie ring homomorphisms between Lazard Lie rings.
Forgetful functor to set Sends a Lazard Lie ring to its underlying set, sends a homomorphism of Lazard Lie rings to the map of underlying sets.

Viewed this way, the category is a full subcategory of the category of Lie rings.

As the category of Lazard Lie groups

The Lazard Lie category can be defined as the following concrete category:

Item Value
Objects Lazard Lie groups
Morphisms homomorphism of groups between Lazard Lie groups.
Forgetful functor to set Sends a Lazard Lie group to its underlying set, sends a homomorphism of Lazard Lie groups to the map of underlying sets.

Viewed this way, the category is a full subcategory of the category of groups.

Equivalence of definitions

Further information: equivalence of definitions of Lazard Lie category