The contramodule Bass-flat equivalence conjecture

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Let R\mathfrak R be a complete, separated topological associative ring with a right linear topology. A Bass flat left R\mathfrak R-contramodule is a direct limit in the category of left R\mathfrak R-contramodules of a sequence of free left R\mathfrak R-contramodules with one generator. The conditions below are compared with the equivalent conditions in the referenced theorem.

Contramodule Bass-flat equivalence conjecture. The following conditions are equivalent to each other and to the conditions listed in the theorem: (i♭^\flat) all Bass flat left R\mathfrak R-contramodules have projective covers; (iii♭^\flat) all Bass flat left R\mathfrak R-contramodules are projective; and (v) all discrete right R\mathfrak R-modules are coperfect.

This conjecture connects projective-cover and projectivity properties of Bass flat contramodules with coperfectness of discrete right modules. The supplied text does not state whether it has been proved or disproved.

References

Primary source

Leonid Positselski and Jan Stovicek, “Topologically semisimple and topologically perfect topological rings”, arXiv:1909.12203 (2022).

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