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Everything about Projective module

Direct summand of a free module (mathematics)

In mathematics, particularly in algebra, the class of projective modules enlarges the class of free modules over a ring, keeping some of the main properties of free modules. Various equivalent characterizations of these modules appear below. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Projective moduleA 5-minute orientation
  2. Skim a recent paper: When every S -flat module is (flat) projectiveInfluential work since 2022
  3. Pick up a classic book: Continuous and discrete modulesThe most-reprinted book on the subject
  4. Read the landmark paper: Gorenstein projective dimension with respect to a semidualizing moduleCited 78 times
  5. Go sideways: Flat moduleA closely related topic
  6. Go sideways: Commutative ringA closely related topic

📖 Definitions

Noun A module which is a direct summand of a free module.

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

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