The Grothendieck Group and K-Theory
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866917553086922752 |
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| author | Kanungo, Shihan |
| author_facet | Kanungo, Shihan |
| contents | In this expository paper, we develop the basic ideas underlying Grothendieck groups and to illustrate their appearance across algebra, topology, representation theory, and homological algebra. Motivated by the universal construction associated to a commutative monoid, we define the Grothendieck groups abelian categories and rings. Along the way we study several fundamental examples, including Euler characteristics, projective modules, and representation rings. We conclude with a discussion of $K$-theory and its applications, indicating how the elementary construction of $K_0$ serves as the first layer of a much richer homotopical theory. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2606_01492 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | The Grothendieck Group and K-Theory Kanungo, Shihan History and Overview 19-01, 19A In this expository paper, we develop the basic ideas underlying Grothendieck groups and to illustrate their appearance across algebra, topology, representation theory, and homological algebra. Motivated by the universal construction associated to a commutative monoid, we define the Grothendieck groups abelian categories and rings. Along the way we study several fundamental examples, including Euler characteristics, projective modules, and representation rings. We conclude with a discussion of $K$-theory and its applications, indicating how the elementary construction of $K_0$ serves as the first layer of a much richer homotopical theory. |
| title | The Grothendieck Group and K-Theory |
| topic | History and Overview 19-01, 19A |
| url | https://arxiv.org/abs/2606.01492 |