Solving $1$-Laplacians of Convex Simplicial Complexes
summary
Proposal: fast solver for 1‑Laplacians on certain 3D simplicial complexes that reduce to zero-Laplacian problems via dualization. Method: use Helmholtz decomposition to split demands into potential + circulation, find an initial face flux by exploiting collapsibility of convex triangulations (Whitehead), then optimize circulations with a KOSZ‑style iterative energy minimization and call existing nearly‑linear graph Laplacian solvers. Works under assumptions: convex triangulated 3‑ball, β2=0 and collapsible subcomplexes; practical extension beyond those restrictions remains open.
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chapters (15)
- 0:00Introduction to laplacians
- 1:33Graph laplacian solvers
- 3:24Higher dimensional topology
- 5:11Regression and simplices
- 7:43Helmholtz-Hodge motivation
- 10:23The zero laplacian
- 13:52Terminology and chains
- 17:07Flow decomposition
- 22:22The Kosc-style algorithm
- 25:09Decomposition and projection
- 28:10Solving via minimization
- 34:13Dualizing equations
- 38:07Collapsibility and complexes
- 44:57Spheres and topologies
- 47:20Social networks and closure
