Relative perfect complexes
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ISSN: 0025-5874
E-ISSN: 1432-1823
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Abstract
Let f:X→Y be a morphism of concentrated schemes. We characterize f-perfect complexes E as those such that the functor E⊗LLXLLf∗− preserves bounded complexes. We prove, as a consequence, that a quasi-proper morphism takes relative perfect complexes into perfect ones. We obtain a generalized version of the semicontinuity theorem of dimension of cohomology and Grauert’s base change of the fibers. Finally, a bivariant theory of the Grothendieck group of perfect complexes is developed
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Alonso Tarrío, L., Jeremías López, A. & Sancho de Salas, F. Relative perfect complexes. Math. Z. 304, 42 (2023). https://doi.org/10.1007/s00209-023-03294-7
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https://doi.org/10.1007/s00209-023-03294-7Sponsors
Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature
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© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ Atribución 4.0 Internacional