activity
20242026
collaborators

12 papers

math.NT2026

Nahm Sums Dual to Zagier's Rank-Three Examples and Related Identities

Changsong Shi, Liuquan Wang

In 2007, Zagier identified twelve families of candidates for rank-three modular Nahm sums and established the modularity of three of them. The remaining cases were subsequently con…

math.NT2026

Modular Nahm Sums for the Inverse Cartan Matrix of Type

Liuquan Wang, Shangwen Wang

For we denote by the Cartan matrix of type . Recently, Sun and Wang conjectured a Rogers--Ramanujan type identity for the Nahm sum associated with…

math.NT2026

Some new modular Nahm sums of ranks 3 and 4

Zhineng Cao, Liuquan Wang

We discover six new families of modular Nahm sums in ranks 3 and 4. Two of them are rank three sums obtained by modifying two of Zagier's rank three examples. Three rank four famil…

math.CO2025

Nahm sum identities for Cartan matrices of type

Liuquan Wang, Shangwen Wang

Around 2007, Warnaar proved four identities related to Nahm sums associated with twice the inverse of the Cartan matrix of type . Three of these had been conjectured by Flohr,…

math.NT2025

Some New Modular Rank Four Nahm Sums as Lift-dual of Rank Three Examples

Zhineng Cao, Liuquan Wang

We find nine new sets of rank four Nahm sums associated with nine different numeric matrices which are likely to be modular. They are discovered by applying the lift-dual operation…

math.NT2025

Proofs of Two Conjectural Identities on Partial Nahm Sums

Changsong Shi, Liuquan Wang

Recently, Wang and Zeng investigated modularity of partial Nahm sums and discovered 14 modular families of such sums. They confirmed modularity for 13 families and proposed a conje…