Representation stability for marked graph complexes
Algebraic Combinatorics, Volume 9 (2026) no. 3, pp. 865-892

We prove a sharp representation stability result for graph complexes with a distinguished vertex, and prove that the chains realizing this sharp bound pass to non-trivial families of graph homology classes. This result may be interpreted as a higher genus generalization of Hersh and Reiner’s stability bound for configuration spaces of points in odd dimensional Euclidean space.

Received:
Revised:
Accepted:
Published online:
DOI: 10.5802/alco.487
Classification: 18G85 (primary), 05E18 (secondary)
Keywords: graph complexes, representation stability

Fedah, Enoch  1 ; Ward, Benjamin C.  1

1 Bowling Green State University, Dept. of Mathematics and Statistics, 1001 E. Wooster St., Bowling Green, OH 43403 (USA)
License: CC-BY 4.0
Copyrights: The authors retain unrestricted copyrights and publishing rights
Fedah, Enoch; Ward, Benjamin C. Representation stability for marked graph complexes. Algebraic Combinatorics, Volume 9 (2026) no. 3, pp. 865-892. doi: 10.5802/alco.487
@article{ALCO_2026__9_3_865_0,
     author = {Fedah, Enoch and Ward, Benjamin C.},
     title = {Representation stability for marked graph complexes},
     journal = {Algebraic Combinatorics},
     pages = {865--892},
     year = {2026},
     publisher = {The Combinatorics Consortium},
     volume = {9},
     number = {3},
     doi = {10.5802/alco.487},
     language = {en},
     url = {https://alco.centre-mersenne.org/articles/10.5802/alco.487/}
}
TY  - JOUR
AU  - Fedah, Enoch
AU  - Ward, Benjamin C.
TI  - Representation stability for marked graph complexes
JO  - Algebraic Combinatorics
PY  - 2026
SP  - 865
EP  - 892
VL  - 9
IS  - 3
PB  - The Combinatorics Consortium
UR  - https://alco.centre-mersenne.org/articles/10.5802/alco.487/
DO  - 10.5802/alco.487
LA  - en
ID  - ALCO_2026__9_3_865_0
ER  - 
%0 Journal Article
%A Fedah, Enoch
%A Ward, Benjamin C.
%T Representation stability for marked graph complexes
%J Algebraic Combinatorics
%D 2026
%P 865-892
%V 9
%N 3
%I The Combinatorics Consortium
%U https://alco.centre-mersenne.org/articles/10.5802/alco.487/
%R 10.5802/alco.487
%G en
%F ALCO_2026__9_3_865_0

[1] Burkhardt, Léon Weight 11 compactly supported cohomology of moduli spaces of curves in excess four, Homology Homotopy Appl., Volume 28 (2026) no. 1, pp. 125-139 | Zbl | DOI | MR

[2] Canning, Samir; Larson, Hannah; Payne, Sam; Willwacher, Thomas The motivic structures LS 12 and S 16 in the cohomology of moduli spaces of curves, 2024 | arXiv | Zbl

[3] Chan, Melody; Galatius, Søren; Payne, Sam Topology of moduli spaces of tropical curves with marked points, Facets of algebraic geometry. Vol. I (London Math. Soc. Lecture Note Ser.), Volume 472, Cambridge Univ. Press, Cambridge, 2022, pp. 77-131 | Zbl | DOI | MR

[4] Church, Thomas; Ellenberg, Jordan S.; Farb, Benson FI-modules and stability for representations of symmetric groups, Duke Math. J., Volume 164 (2015) no. 9, pp. 1833-1910 | Zbl | DOI | MR

[5] Church, Thomas; Farb, Benson Representation theory and homological stability, Adv. Math., Volume 245 (2013), pp. 250-314 | Zbl | DOI | MR

[6] Cohen, Frederick R.; Lada, Thomas J.; May, J. Peter The homology of iterated loop spaces, Lecture Notes in Mathematics, Vol. 533, Springer-Verlag, Berlin-New York, 1976, vii+490 pages | DOI | Zbl | MR

[7] Early, Nicholas; Reiner, Victor On configuration spaces and Whitehouse’s lifts of the Eulerian representations, J. Pure Appl. Algebra, Volume 223 (2019) no. 10, pp. 4524-4535 | MR | Zbl | DOI

[8] Fulton, William; Harris, Joe Representation theory: A first course, Graduate Texts in Mathematics, 129, Springer-Verlag, New York, 1991, xvi+551 pages | Zbl | DOI | MR

[9] Gadish, Nir; Hainaut, Louis Configuration spaces on a wedge of spheres and Hochschild-Pirashvili homology, Ann. H. Lebesgue, Volume 7 (2024), pp. 841-902 | DOI | MR | Zbl | Numdam

[10] Gerstenhaber, Murray; Schack, S. D. A Hodge-type decomposition for commutative algebra cohomology, J. Pure Appl. Algebra, Volume 48 (1987) no. 3, pp. 229-247 | Zbl | DOI | MR

[11] Hersh, Patricia; Reiner, Victor Representation stability for cohomology of configuration spaces in d , Int. Math. Res. Not. IMRN (2017) no. 5, pp. 1433-1486 (With an appendix written jointly with Steven Sam) | Zbl | DOI | MR

[12] Jiménez Rolland, Rita; Wilson, Jennifer C. H. Stability properties of moduli spaces, Notices Amer. Math. Soc., Volume 69 (2022) no. 4, pp. 522-533 | Zbl | DOI | MR

[13] Koike, Kazuhiko; Terada, Itaru Young-diagrammatic methods for the representation theory of the groups Sp and SO , The Arcata Conference on Representations of Finite Groups (Arcata, Calif., 1986) (Proc. Sympos. Pure Math.), Volume 47, Amer. Math. Soc., Providence, RI, 1987, pp. 437-447 | Zbl | DOI | MR

[14] Lehrer, G. I.; Solomon, Louis On the action of the symmetric group on the cohomology of the complement of its reflecting hyperplanes, J. Algebra, Volume 104 (1986) no. 2, pp. 410-424 | Zbl | DOI | MR

[15] Payne, Sam; Willwacher, Thomas Weight 11 compactly supported cohomology of moduli spaces of curves, Int. Math. Res. Not. IMRN (2024) no. 8, pp. 7060-7098 | Zbl | DOI | MR

[16] Ramos, Eric Generalized representation stability and FI d -modules, Proc. Amer. Math. Soc., Volume 145 (2017) no. 11, pp. 4647-4660 | Zbl | DOI | MR

[17] Sam, Steven V.; Snowden, Andrew Gröbner methods for representations of combinatorial categories, J. Amer. Math. Soc., Volume 30 (2017) no. 1, pp. 159-203 | DOI | MR | Zbl

[18] Serre, Jean-Pierre Linear representations of finite groups, Graduate Texts in Mathematics, Vol. 42, Springer-Verlag, New York-Heidelberg, 1977, x+170 pages | DOI | Zbl | MR

[19] Sundaram, Sheila; Welker, Volkmar Group actions on arrangements of linear subspaces and applications to configuration spaces, Trans. Amer. Math. Soc., Volume 349 (1997) no. 4, pp. 1389-1420 | Zbl | DOI | MR

[20] Tosteson, Philip Stability in the homology of Deligne-Mumford compactifications, Compos. Math., Volume 157 (2021) no. 12, pp. 2635-2656 | Zbl | DOI | MR

[21] Ward, Benjamin C. Massey products for graph homology, Int. Math. Res. Not. IMRN (2022) no. 11, pp. 8086-8161 | Zbl | DOI | MR

[22] Ward, Benjamin C. Stirling decomposition of graph homology in genus 1, Higher structures in topology, geometry, and physics (Contemp. Math.), Volume 802, Amer. Math. Soc., [Providence], RI, [2024] ©2024, pp. 93-116 | Zbl | DOI | MR

[23] Whitehouse, Sarah The Eulerian representations of Σ n as restrictions of representations of Σ n+1 , J. Pure Appl. Algebra, Volume 115 (1997) no. 3, pp. 309-320 | Zbl | DOI | MR

Cited by Sources: