...and refinements of the *s*-invariant

...and refinements of the s-invariant

November 10, 2025 - 04:30 - November 10, 2025 - 05:30

Robert Lipshitz, Minerva Distinguished Visitor & University of Oregon

Fine Hall 314

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This lecture will give a framework for using natural operations on Khovanov homology to refine the $s$-invariant; the Steenrod squares from the previous two lectures are an example, but we will also mention some others.

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...and refinements of the *s*-invariant

...and refinements of the *s*-invariant

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...and refinements of the s-invariant

...and refinements of the s-invariant