Abstract
We examine two truncated series derived from a classical theta identity of Gauss. As a consequence, we obtain two infinite families of inequalities for the overpartition function \(\overline{p_o}(n)\) counting the number of overpartitions into odd parts. We provide partition-theoretic interpretations of these results.
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Andrews, G.E.: The Theory of Partitions. Reprint of the 1976 original. Cambridge University Press, Cambridge (1998)
Andrews, G.E., Merca, M.: The truncated pentagonal number theorem. J. Combin. Theory Ser. A 119(8), 1639–1643 (2012)
Andrews, G.E., Merca, M.: Truncated theta series and a problem of Guo and Zeng. J. Combin. Theory Ser. A 154, 610–619 (2018)
Ballantine, C., Merca, M., Passary, D., Yee, A.J.: Combinatorial proofs of two truncated theta series theorems. J. Combin. Theory Ser. A 160, 168–185 (2018)
Bessenrodt, C.: On pairs of partitions with steadily decreasing parts. J. Combin. Theory Ser. A 99(1), 162–174 (2002)
Boulet, C., Pak, I.: A combinatorial proof of the Rogers-Ramanujan and Schur identities. J. Combin. Theory Ser. A 113(6), 1019–1030 (2006)
Chan, S.H., Ho, T.P.N., Mao, R.: Truncated series from the quintuple product identity. J. Number Theory 169, 420–438 (2016)
Chen, S.-C.: On the number of overpartitions into odd parts. Discrete Math. 325, 32–37 (2014)
Chern, S.: A further look at the truncated pentagonal number theorem. Acta Arith. 189(4), 397–403 (2019)
Corteel, S., Lovejoy, J.: Overpartitions. Trans. Amer. Math. Soc. 356(4), 1623–1635 (2004)
Gasper, G., Rahman, M.: Basic Hypergeometric Series. Cambridge University Press, Cambridge (2004)
Guo, V.J.W., Zeng, J.: Two truncated identity of Gauss. J. Combin. Theory Ser. A 120(3), 700–707 (2013)
He, T.Y., Ji, K.Q., Zang, W.J.T.: Bilateral truncated Jacobi’s identity. European J. Combin. 51, 255–267 (2016)
Hirschhorn, M.D., Sellers, J.A.: Arithmetic properties of overpartitions into odd parts, Ann. Comb. 10(3), 353–367 (2006)
Kolitsch, L.W.: Another approach to the truncated pentagonal number theorem. Int. J. Number Theory 11(5), 1563–1569 (2015)
Kolitsch, L.W., Burnette, M.: Interpreting the tuncated pentagonal number theorem using partition pairs. Electron. J. Combin. 22(2), #P2.55 (2015)
Lebesgue, V.A.: Sommation de quelques séries. J. Math. Pure. Appl. 5, 42–71 (1840)
Mao, R.: Proofs of two conjectures on truncated series. J. Combin. Theory Ser. A 130, 15–25 (2015)
Mao, R.: Some new expansions for certain truncated \(q\)-series. Ramanujan J. 46, 475–481 (2018)
Merca, M.: A new look on the truncated pentagonal number theorem. Carpathian J. Math. 32(1), 97–101 (2016)
Santos, J.P.O., Sills, A.V.: \(q\)-Pell sequences and two identities of V.A. Lebesgue. Discrete Math. 257(1), 125–142 (2002)
Wang, C., Yee, A.J.: Truncated Jacobi’s triple product identity. J. Combin. Theory Ser. A 166, 382–392 (2019)
Wang, C., Yee, A.J.: Truncated Hecke-Rogers type series. preprint
Wang, C., Yee, A.J.: Truncated theorems on a quotient of eta products. preprint
Yee, A.J.: A truncated Jacobi triple product theorem. J. Combin. Theory Ser. A 130, 1–14 (2015)
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The authors appreciate the anonymous referees for their comments on the original version of this paper.
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Dedicated to Professor George E. Andrews
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Chun Wang was partially supported by the outstanding doctoral dissertation cultivation plan of action (No. YB2016028).
Ae Ja Yee was partially supported by a Grant (\(\#\)280903) from the Simons Foundation.
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Merca, M., Wang, C. & Yee, A.J. A Truncated Theta Identity of Gauss and Overpartitions into Odd Parts. Ann. Comb. 23, 907–915 (2019). https://doi.org/10.1007/s00026-019-00442-x
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DOI: https://doi.org/10.1007/s00026-019-00442-x