Instytut Matematyczny Polskiej Akademii Nauk / Institute of Mathematics / Publishing house / Journals and Serials / Fundamenta Mathematicae

Online First articles

• Failure of the product and subgroup theorems for the covering dimension of topological groups Olga Sipacheva Fundamenta Mathematicae MSC: Primary 22A05; Secondary 54F45 DOI: 10.4064/fm250720-26-4 Published online: 7 September 2026
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• Non-representable quantum measures Alexandru Chirvasitu Fundamenta Mathematicae MSC: Primary 28A35; Secondary 28A60, 47A07, 81Q65 DOI: 10.4064/fm250910-3-4 Published online: 15 September 2026
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• The set-theoretic Kaufmann–Clote question Zachiri McKenzie Fundamenta Mathematicae MSC: Primary 03C63; Secondary 03H99 DOI: 10.4064/fm250717-23-2 Published online: 17 September 2026
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• Meromorphic functions whose action on their Julia sets is non-ergodic Tao Chen, Yunping Jiang, Linda Keen Fundamenta Mathematicae MSC: Primary 37F10; Secondary 30F05, 30D05, 37A30 DOI: 10.4064/fm241227-7-5 Published online: 23 September 2026
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• The crossing matrix and the extended first Johnson homomorphism of a braid group Yusuke Kuno, Yoshiro Yaguchi Fundamenta Mathematicae MSC: Primary 20F36; Secondary 20F34 DOI: 10.4064/fm251202-27-6 Published online: 6 October 2026
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