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- W4386554445 abstract "Given a compact connected Lie group G endowed with root datum, and an element w in the corresponding Artin braid group for G, we describe a filtered G-equivariant stable homotopy type, up to a notion of quasi-equivalence. We call this homotopy type Strict Broken Symmetries, sB(w). As the name suggests, sB(w) is constructed from the stack of principal G-connections on a circle, whose symmetry is broken between consecutive arcs in a manner prescribed by a presentation of w. We show that sB(w) is independent of the choice of presentation of w, and also satisfies Markov type properties. Specializing to the case of the unitary group G = U(r), these properties imply that sB(w) is an invariant of the link L obtained by closing the r-stranded braid w. As such, we denote it by sB(L). In the follow up to this article, we will show that the construction of strict broken symmetries allows us to incorporate twistings. Under suitable conditions, U(r)-equivariant (twisted) cohomology theories EU(r) applied to sB(L) give rise to a spectral sequence of link invariants converging to the cohomology of the direct limit of the filtration of sB(L). For instance we describe Triply-graded link homology as the E2-term in the spectral sequence one obtains on applying Borel-equivariant singular cohomology HU(r) to sB(L). We also study a universal twist of HU(r). Here one recovers sl(n)-link homologies for any value of n (depending on the choice of specialization of the universal twist)." @default.
- W4386554445 created "2023-09-09" @default.
- W4386554445 creator A5048249795 @default.
- W4386554445 date "2019-10-14" @default.
- W4386554445 modified "2023-10-16" @default.
- W4386554445 title "Symmetry Breaking and Link Homologies I" @default.
- W4386554445 doi "https://doi.org/10.48550/arxiv.1910.07443" @default.
- W4386554445 hasPublicationYear "2019" @default.
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