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In [Haglund, Remmel, Wilson 2018] the authors state two versions of the so called Delta conjecture, the rise version and the valley version. Of the former, they also give a more general statement in which zero labels are also allowed. In…

Combinatorics · Mathematics 2021-01-08 Alessandro Iraci , Anna Vanden Wyngaerd

In (Haglund, Remmel, Wilson 2018) Haglund, Remmel and Wilson introduced their Delta conjectures, which give two different combinatorial interpretations of the symmetric function $\Delta'_{e_{n-k-1}} e_n$ in terms of rise-decorated or…

Combinatorics · Mathematics 2023-10-30 Michele D'Adderio , Alessandro Iraci

We conjecture a formula for the symmetric function $\frac{[n-k]_t}{[n]_t}\Delta_{h_m}\Delta_{e_{n-k}}\omega(p_n)$ in terms of decorated partially labelled square paths. This can be seen as a generalization of the square conjecture of Loehr…

Combinatorics · Mathematics 2022-06-06 Michele D'Adderio , Alessandro Iraci , Anna Vanden Wyngaerd

The Shuffle Theorem of Carlsson and Mellit gives a combinatorial expression for the bigraded Frobenius characteristic of the ring of diagonal harmonics, and the Delta Conjecture of Haglund, Remmel and the second author provides two…

Combinatorics · Mathematics 2025-03-28 Dun Qiu , Andrew Timothy Wilson

We introduce the family of Theta operators $\Theta_f$ indexed by symmetric functions $f$ that allow us to conjecture a compositional refinement of the Delta conjecture of Haglund, Remmel and Wilson for $\Delta_{e_{n-k-1}}'e_n$. We show that…

Combinatorics · Mathematics 2022-06-06 Michele D'Adderio , Alessandro Iraci , Anna Vanden Wyngaerd

In the context of the (generalized) Delta Conjecture and its compositional form, D'Adderio, Iraci, and Wyngaerd recently stated a conjecture relating two symmetric function operators, $D_k$ and $\Theta_k$. We prove this Theta Operator…

Combinatorics · Mathematics 2020-04-14 Marino Romero

We prove a compositional refinement of the Delta conjecture (rise version) of Haglund, Remmel and Wilson (2018) for $\Delta_{e_{n-k-1}}'e_n$ which was stated by D'Adderio, Iraci and Vanden Wyngaerd (2020) in terms of Theta operators.

Combinatorics · Mathematics 2020-11-24 Michele D'Adderio , Anton Mellit

In this paper, we extend the rectangular side of the shuffle conjecture by stating a rectangular analogue of the square paths conjecture. In addition, we describe a set of combinatorial objects and one statistic that are a first step…

Combinatorics · Mathematics 2023-12-07 Alessandro Iraci , Roberto Pagaria , Giovanni Paolini , Anna Vanden Wyngaerd

We prove the cases q=0 and t=0 of the generalized Delta conjecture of Haglund, Remmel and Wilson involving the symmetric function $\Delta_{h_m}\Delta_{e_{n-k-1}}'e_n$. Our theorem generalizes recent results by Garsia, Haglund, Remmel and…

Combinatorics · Mathematics 2022-06-06 Michele D'Adderio , Alessandro Iraci , Anna Vanden Wyngaerd

We prove the Schr\"oder case, i.e. the case $\langle \cdot,e_{n-d}h_d \rangle$, of the conjecture of Haglund, Remmel and Wilson (Haglund et al. 2018) for $\Delta_{h_m}\Delta_{e_{n-k-1}}'e_n$ in terms of decorated partially labelled Dyck…

Combinatorics · Mathematics 2022-06-06 Michele D'Adderio , Alessandro Iraci , Anna Vanden Wyngaerd

We conjecture two combinatorial interpretations for the symmetric function $\Delta_{e_k} e_n$, where $\Delta_f$ is an eigenoperator for the modified Macdonald polynomials defined by Bergeron, Garsia, Haiman, and Tesler. Both interpretations…

Combinatorics · Mathematics 2017-09-07 James Haglund , Jeffrey Remmel , Andrew Timothy Wilson

In [The Delta Conjecture, Trans. Amer. Math. Soc., to appear] Haglund, Remmel, Wilson introduce a conjecture which gives a combinatorial prediction for the result of applying a certain operator to an elementary symmetric function. This…

Combinatorics · Mathematics 2017-10-20 Adriano Garsia , Jim Haglund , Jeffrey B. Remmel , Meesue Yoo

In a recent preprint, Carlsson and Oblomkov (2018) obtain a long sought after monomial basis for the ring $\operatorname{DR}_n$ of diagonal coinvariants. Their basis is closely related to the "schedules" formula for the Hilbert series of…

Combinatorics · Mathematics 2020-04-01 James Haglund , Emily Sergel

This paper discusses a general Aitken delta-squared generalized Jungck-modified iterative scheme. The study applies generalized versions of Aitken delta squared procedure and Venter theorem to discuss positivity and global stability of the…

Functional Analysis · Mathematics 2015-06-17 M. De la sen

In \cite{HRW15}, Haglund, Remmel, Wilson state a conjecture which predicts a purely combinatorial way of obtaining the symmetric function $\Delta_{e_k}e_n$. It is called the Delta Conjecture. It was recently proved in \cite{GHRY} that the…

Combinatorics · Mathematics 2018-01-24 Adriano Garsia , Jeffrey Liese , Jeffrey B. Remmel , Meesue Yoo

In [Dugan-Glennon-Gunnells-Steingrimsson-2019], the authors introduce tiered trees to define combinatorial objects counting absolutely indecomposable representations of certain quivers, and torus orbits on certain homogeneous varieties. In…

Combinatorics · Mathematics 2023-03-02 Michele D'Adderio , Alessandro Iraci , Yvan LeBorgne , Marino Romero , Anna Vanden Wyngaerd

We prove that the symmetric function $\Delta'_{e_{k-1}}e_n$ appearing in the Delta Conjecture can be obtained from the symmetric function in the Rational Shuffle Theorem by applying a Schur skewing operator. This generalizes a formula by…

Combinatorics · Mathematics 2024-08-23 Maria Gillespie , Eugene Gorsky , Sean T. Griffin

We prove the Extended Delta Conjecture of Haglund, Remmel, and Wilson, a combinatorial formula for $\Delta _{h_l}\Delta' _{e_k} e_{n}$, where $\Delta' _{e_k}$ and $\Delta_{h_l}$ are Macdonald eigenoperators and $e_n$ is an elementary…

Combinatorics · Mathematics 2021-08-31 Jonah Blasiak , Mark Haiman , Jennifer Morse , Anna Pun , George H. Seelinger

We generalize previous definitions of Tesler matrices to allow negative matrix entries and negative hook sums. Our main result is an algebraic interpretation of a certain weighted sum over these matrices, which we call the Tesler function.…

Combinatorics · Mathematics 2015-10-13 Andrew Timothy Wilson

We use a weight-preserving, sign-reversing involution to find a combinatorial expansion of $\Delta_{e_k} e_n$ at $q=1$ in terms of the elementary symmetric function basis. We then use a weight-preserving bijection to prove the Delta…

Combinatorics · Mathematics 2016-09-19 Marino Romero
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