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Contents of Volume 253

• Rigidity theorems for Hénon maps—II Sayani Bera Fundamenta Mathematicae 253 (2021), 1-16 MSC: Primary 32H50; Secondary 32H02, 37F50. DOI: 10.4064/fm728-6-2020
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• Enriched categories of correspondences and characteristic classes of singular varieties Shoji Yokura Fundamenta Mathematicae 253 (2021), 17-60 MSC: Primary 14C17, 14C40, 18D20, 55N22; Secondary 14F99, 19E99, 55N99. DOI: 10.4064/fm761-1-2020
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• Singular crossings and Ozsváth–Szabó’s Kauffman-states functor Andrew Manion Fundamenta Mathematicae 253 (2021), 61-120 MSC: Primary 57K18; Secondary 57R58, 57R56. DOI: 10.4064/fm762-5-2020
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• Ramsey properties and extending partial automorphisms for classes of finite structures David M. Evans, Jan Hubička, Jaroslav Nešetřil Fundamenta Mathematicae 253 (2021), 121-153 MSC: Primary 05D10, 20B27; Secondary 03C15, 22F50, 37B05. DOI: 10.4064/fm560-8-2020
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• Computing ribbon obstructions for colored knots Patricia Cahn, Alexandra Kjuchukova Fundamenta Mathematicae 253 (2021), 155-173 MSC: Primary 57M12; Secondary 57K10, 57N70. DOI: 10.4064/fm767-7-2020
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• On the complexity of classes of uncountable structures: trees on $\aleph _1$ Sy-David Friedman, Dániel T. Soukup Fundamenta Mathematicae 253 (2021), 175-196 MSC: 03E15, 03E35. DOI: 10.4064/fm910-6-2020
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• Equidecomposition in cardinal algebras Forte Shinko Fundamenta Mathematicae 253 (2021), 197-204 MSC: Primary 08A65; Secondary 28A60. DOI: 10.4064/fm922-6-2020
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• Jaworski-type embedding theorems of one-sided dynamical systems Hisao Kato Fundamenta Mathematicae 253 (2021), 205-218 MSC: Primary 37A35, 37C45, 54H20; Secondary 54F45, 37B45, 37M10. DOI: 10.4064/fm894-6-2020
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• Borel chromatic numbers of graphs of commuting functions Connor Meehan, Konstantinos Palamourdas Fundamenta Mathematicae 253 (2021), 219-237 MSC: Primary 03E15; Secondary 05C15. DOI: 10.4064/fm577-5-2020
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• Definable Hamel bases and ${\sf AC}_\omega ({\mathbb R})$ Vladimir Kanovei, Ralf Schindler Fundamenta Mathematicae 253 (2021), 239-256 MSC: Primary 03E15; Secondary 03E35. DOI: 10.4064/fm909-6-2020
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• Finite powers and products of Menger sets Piotr Szewczak, Boaz Tsaban, Lyubomyr Zdomskyy Fundamenta Mathematicae 253 (2021), 257-275 MSC: Primary 54D20; Secondary 03E17. DOI: 10.4064/fm896-4-2020
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• Squares and uncountably singularized cardinals Maxwell Levine, Dima Sinapova Fundamenta Mathematicae 253 (2021), 277-296 MSC: Primary 03E35; Secondary 03E55. DOI: 10.4064/fm955-9-2020
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• Singular chains and the fundamental group Manuel Rivera, Mahmoud Zeinalian Fundamenta Mathematicae 253 (2021), 297-316 MSC: Primary 55P15, 55U40; Secondary 57T30, 55P35. DOI: 10.4064/fm734-6-2020
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• On the Lipschitz dimension of Cheeger–Kleiner Guy C. David Fundamenta Mathematicae 253 (2021), 317-358 MSC: Primary 30L99; Secondary 30L05, 54F45, 53C23, 51F30. DOI: 10.4064/fm776-8-2020
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