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Alladi and Gordon introduced the method of weighted words in 1993 to prove a refinement and generalisation of Schur's partition identity. Together with Andrews, they later used it to refine Capparelli's and G\"ollnitz' identities too. In…

Combinatorics · Mathematics 2017-02-24 Jehanne Dousse

The partition function $p(n)$, which counts the number of partitions of a positive integer $n$, is widely studied. Here, we study partition functions $p_S(n)$ that count partitions of $n$ into distinct parts satisfying certain congruence…

Strict partitions are enumerated with respect to the weight, the number of parts, and the number of sequences of odd length. We write this trivariate generating function as a double sum $q$-series. Equipped with such a combinatorial set-up,…

Combinatorics · Mathematics 2024-10-15 Shishuo Fu , Haijun Li

In this paper, we generalize a few important results in Integer Partitions; namely the results known as Stanley's theorem and Elder's theorem, and the congruence results proposed by Ramanujan for the partition function. We generalize the…

Discrete Mathematics · Computer Science 2011-11-02 Manosij Ghosh Dastidar , Sourav Sen Gupta

Recently Corteel and Welsh outlined a technique for finding new sum-product identities by using functional relations between generating functions for cylindric partitions and a theorem of Borodin. Here, we extend this framework to include…

Combinatorics · Mathematics 2022-01-11 Walter Bridges , Ali Uncu

This work follows the spirit of Andrews' series of papers on Partition Analysis. In $2011$, Savage and Sills found new sum sides for the little G\"ollnitz identities and provided their partition interpretations. It turns out that similar…

Combinatorics · Mathematics 2025-10-28 Runqiao Li

Recently, Andrews and Merca have given a new combinatorial interpretation of the total number of even parts in all partitions of n into distinct parts. We generalise this result and consider many more variations of their work. We also…

Combinatorics · Mathematics 2022-11-28 Darlison Nyirenda , Beaullah Mugwangwavari

We find involutions for three Rogers-Ramanujan-Gordon type identities obtained by Andrews on the generating functions for partitions with part difference and parity restrictions.

Combinatorics · Mathematics 2010-04-27 William Y. C. Chen , Doris D. M. Sang , Diane Y. H. Shi

Euler's partition identity states that the number of partitions of $n$ into odd parts is equal to the number of partitions of $n$ into distinct parts. Strikingly, Straub proved in 2016 that this identity also holds when counting partitions…

Combinatorics · Mathematics 2025-02-19 Gabriel Gray , Emily Payne , Holly Swisher , Ren Watson

A special case of an elegant result due to Anderson proves that the number of $(s,s+1)$-core partitions is finite and is given by the Catalan number $C_s$. Amdeberhan recently conjectured that the number of $(s,s+1)$-core partitions into…

Combinatorics · Mathematics 2016-01-27 Armin Straub

We refine Schmidt's problem and a partition identity related to 2-color partitions which we will refer to as Uncu-Andrews-Paule theorem. We will approach the problem using Boulet-Stanley weights and a formula on Rogers-Szeg\H{o} polynomials…

Combinatorics · Mathematics 2022-05-20 Alexander Berkovich , Ali Kemal Uncu

Recently, George Andrews has given a Glaisher style proof of a finite version of Euler's partition identity. We generalise this result by giving a finite version of Glaisher's partition identity. Both the generating function and bijective…

Combinatorics · Mathematics 2016-12-06 Darlison Nyirenda

We prove analytic and combinatorial identities reminiscent of Schur's classical partition theorem. Specifically, we show that certain families of overpartitions whose parts satisfy gap conditions are equinumerous with partitions whose parts…

Number Theory · Mathematics 2013-11-22 Kathrin Bringmann , Jeremy Lovejoy , Karl Mahlburg

Andrews and El Bachraoui recently studied integer partitions where the smallest part is repeated a specified number of times and any other parts are distinct. Their results included two ``surprising identities'' for which they requested…

Combinatorics · Mathematics 2025-08-26 Brian Hopkins

We prove polynomial boson-fermion identities for the generating function of the number of partitions of $n$ of the form $n=\sum_{j=1}^{L-1} j f_j$, with $f_1\leq i-1$, $f_{L-1} \leq i'-1$ and $f_j+f_{j+1}\leq k$. The bosonic side of the…

q-alg · Mathematics 2009-10-30 S. O. Warnaar

We start with a bijective proof of Schur's theorem due to Alladi and Gordon and describe how a particular iteration of it leads to some very general theorems on colored partitions. These theorems imply a number of important results,…

Combinatorics · Mathematics 2007-09-11 Sylvie Corteel , Jeremy Lovejoy

By considering a limiting form of the q-Dixon_4\phi_3 summation, we prove a weighted partition theorem involving odd parts differing by >= 4. A two parameter refinement of this theorem is then deduced from a quartic reformulation of…

Combinatorics · Mathematics 2007-05-23 Krishnaswami Alladi , Alexander Berkovich

The Euler numbers have been widely studied. A signed version of the Euler numbers of even subscript are given by the coefficients of the exponential generating function 1/(1+x^2/2!+x^4/4!+...). Leeming and MacLeod introduced a…

Number Theory · Mathematics 2025-01-15 Bruce E. Sagan

Ferrers graphs and tables of partitions are treated as vectors. Matrix operations are used for simple proofs of identities concerning partitions. Interpreting partitions as vectors gives a possibility to generalize partitions on negative…

Combinatorics · Mathematics 2007-05-23 Milan kunz

Euler's theorem asserts that $A(n)=B(n)$ where $A(n)$ is the number of partitions of $n$ into distinct parts and $B(n)$ is the number of partitions of $n$ into odd parts. In this paper, it is proved that for $n>0$, \begin{align*}…

Combinatorics · Mathematics 2025-11-07 George E. Andrews , Rahul Kumar , Ae Ja Yee
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