collaborators

9 papers

math.GT2026

Lattice homology and Seiberg-Witten Floer spectra

Irving Dai, Hirofumi Sasahira, Matthew Stoffregen

Using lattice homology, we give an explicit combinatorial description of the Seiberg-Witten-Floer spectrum for an almost-rational plumbed homology sphere. Thi…

math.GT2026

Reidemeister and movie moves for involutive links

Maciej Borodzik, Irving Dai, Abhishek Mallick +1

An involutive link is a link which is invariant under the standard rotation by 180 degrees in . We establish an equivariant analogue of the work of Carter and Saito aimed at s…

math.GT2025

Khovanov homology and equivariant surfaces

Maciej Borodzik, Irving Dai, Abhishek Mallick +1

We introduce a refinement of Bar-Natan homology for involutive links, extending the work of Lobb-Watson and Sano. We construct a new suite of numerical invariants and derive bounds…

math.GT2025

The link surgery formula and equivariant surgeries

Kristen Hendricks, Abhishek Mallick, Matthew Stoffregen +1

We prove an equivariant version of the Heegaard Floer link surgery formula. As a special case, this gives an equivariant knot surgery formula for equivariant knots in . Our pr…

math.GT2025

Naturality and functoriality in involutive Heegaard Floer homology

Kristen Hendricks, Jennifer Hom, Matthew Stoffregen +1

We prove first-order naturality of involutive Heegaard Floer homology, and furthermore construct well-defined maps on involutive Heegaard Floer homology associated to cobordisms be…

math.GT2025

Surgery exact triangles in involutive Heegaard Floer homology

Kristen Hendricks, Jennifer Hom, Matthew Stoffregen +1

We establish a surgery exact triangle for involutive Heegaard Floer homology by using a doubling model of the involution. We use this exact triangle to give an involutive version o…