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Contents of Number 1

  Volume 199 / 2021

• Supercongruences and binary quadratic forms Zhi-Hong Sun Acta Arithmetica 199 (2021) , 1-32 MSC: Primary 11A07; Secondary 05A19, 11B65, 11E25. DOI: 10.4064/aa200308-27-9
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• A new analogue of $t$-core partitions D. S. Gireesh, Chiranjit Ray, C. Shivashankar Acta Arithmetica 199 (2021) , 33-53 MSC: 05A15, 05A17, 11F11, 11F20, 11F33. DOI: 10.4064/aa200516-10-12
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• Continued fractions for strong Engel series and Lüroth series with signs Andrew N. W. Hone, Juan Luis Varona Acta Arithmetica 199 (2021) , 55-75 MSC: Primary 11J70; Secondary 11B37, 11J81. DOI: 10.4064/aa200529-26-11
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• Congruences for generalized Fishburn numbers at roots of unity Ankush Goswami Acta Arithmetica 199 (2021) , 77-102 MSC: 33D15, 11P83, 05A19, 11B65. DOI: 10.4064/aa200610-9-11
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• On the local structure of the set of values of Euler's $\varphi $ function Jean-Marc Deshouillers, Pramod Eyyunni, Sanoli Gun Acta Arithmetica 199 (2021) , 103-109 MSC: Primary 11B83; Secondary 11B05, 11N32, 11N64. DOI: 10.4064/aa200722-26-1
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