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Online First articles

• Free structures and limiting density Johanna N. Y. Franklin, Meng-Che “Turbo” Ho, Julia Knight Fundamenta Mathematicae MSC: Primary 08A05; Secondary 03C05, 08B20, 08A60 DOI: 10.4064/fm230911-8-4 Published online: 25 June 2026
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• Fractional divisibility of spheres with partially generic sets of rotations Jan Grebík, Christian Ikenmeyer, Oleg Pikhurko Fundamenta Mathematicae MSC: Primary 28A05; Secondary 03E15, 33C55, 43A90, 57M60 DOI: 10.4064/fm250401-28-4 Published online: 22 July 2026
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• Remark on twists of Frobenius algebra and link homology Noboru Ito, Keita Nakagane, Jun Yoshida Fundamenta Mathematicae MSC: Primary 57K18; Secondary 57K16 DOI: 10.4064/fm250819-12-3 Published online: 27 July 2026
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• Cardinal characteristics associated with small subsets of reals Miguel A. Cardona, Adam Marton, Jaroslav Šupina Fundamenta Mathematicae MSC: Primary 03E17; Secondary 03E35, 03E05, 03E15 DOI: 10.4064/fm250317-14-3 Published online: 11 August 2026
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• Strong ergodicity for the $\varGamma$-jump operator and for actions of Polish wreath products Assaf Shani Fundamenta Mathematicae MSC: Primary 03E15; Secondary 03E75, 37A20, 03E40 DOI: 10.4064/fm220404-18-5 Published online: 3 September 2026
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