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Contents of Volume 252

• Truth definition for $\Delta _ 0$ formulas and PSPACE computations Konrad Zdanowski Fundamenta Mathematicae 252 (2021), 1-38 MSC: 03F30, 03F35, 68Q15. DOI: 10.4064/fm578-1-2020
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• On the pointwise Lyapunov exponent of holomorphic maps Israel Or Weinstein Fundamenta Mathematicae 252 (2021), 39-51 MSC: Primary 37F10, 37F15, 37F50. DOI: 10.4064/fm847-1-2020
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• Characterizing large cardinals through Neeman's pure side condition forcing Peter Holy, Philipp Lücke, Ana Njegomir Fundamenta Mathematicae 252 (2021), 53-102 MSC: 03E55, 03E05, 03E35. DOI: 10.4064/fm662-1-2020
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• An ultrapower analogue of the Kronecker function ring K. Alan Loper, Dario Spirito Fundamenta Mathematicae 252 (2021), 103-119 MSC: 13A15, 13F30, 03C20, 13F05. DOI: 10.4064/fm833-4-2020
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• Factoring a minimal ultrafilter into a thick part and a syndetic part Will Brian, Neil Hindman Fundamenta Mathematicae 252 (2021), 121-145 MSC: Primary 54D35, 54D80, 22A15; Secondary 06E15, 03E05. DOI: 10.4064/fm886-4-2020
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• Indestructibility of Wholeness Paul Corazza Fundamenta Mathematicae 252 (2021), 147-170 MSC: Primary 03E55; Secondary 03E40. DOI: 10.4064/fm604-3-2020
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• On groups with weak Sierpiński subsets Agnieszka Bier, Yves de Cornulier, Piotr Słanina Fundamenta Mathematicae 252 (2021), 171-178 MSC: Primary 20F05; Secondary 20E05. DOI: 10.4064/fm681-2-2020
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• A Sacks indestructible co-analytic maximal eventually different family Vera Fischer, David Schrittesser Fundamenta Mathematicae 252 (2021), 179-201 MSC: 03E17, 03E35. DOI: 10.4064/fm842-1-2020
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• Birkhoff spectrum for piecewise monotone interval maps Thomas Jordan, Michał Rams Fundamenta Mathematicae 252 (2021), 203-223 MSC: Primary 37C45; Secondary 37D35. DOI: 10.4064/fm824-1-2020
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• More on uniform ultrafilters over a singular cardinal Moti Gitik Fundamenta Mathematicae 252 (2021), 225-240 MSC: 03E04, 03E35, 03E45, 03E55. DOI: 10.4064/fm845-5-2020
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• The higher Cichoń diagram Thomas Baumhauer, Martin Goldstern, Saharon Shelah Fundamenta Mathematicae 252 (2021), 241-314 MSC: Primary 03E35; Secondary 03E17, 03E55. DOI: 10.4064/fm666-4-2020
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• A complete Heyting algebra whose Scott space is non-sober Xiaoquan Xu, Xiaoyong Xi, Dongsheng Zhao Fundamenta Mathematicae 252 (2021), 315-323 MSC: Primary 06B35; Secondary 54A05. DOI: 10.4064/fm704-4-2020
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• Square compactness and the filter extension property David Buhagiar, Mirna Džamonja Fundamenta Mathematicae 252 (2021), 325-342 MSC: Primary 03E55, 54D20; Secondary 54F05. DOI: 10.4064/fm787-4-2020
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• On computational complexity of Cremer Julia sets Artem Dudko, Michael Yampolsky Fundamenta Mathematicae 252 (2021), 343-353 MSC: Primary 37F50; Secondary 68Q17. DOI: 10.4064/fm829-12-2019
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• Elements of order 2 in $\beta \mathbb{N}$ Yevhen Zelenyuk Fundamenta Mathematicae 252 (2021), 355-359 MSC: Primary 22A15, 54D80; Secondary 22A30, 05D10. DOI: 10.4064/fm902-5-2020
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