# Paolo Salvatore: Koszul self-duality of E_n operads in spectra

**Time: **
Thu 2022-04-28 14.15 - 16.00

**Location: **
Institut Mittag-Leffler, Seminar Hall Kuskvillan and Zoom

**Video link: **
Meeting ID: 921 756 1880

**Participating: **
Paolo Salvatore (University of Roma 2)

**Abstract:**

We show that an E_n operad in spectra is equivalent to the Spanier Whitehead dual of its bar cooperad shifted by n. The pairing is realized by an explicit S-duality map, involving some new operads. This is joint work with Michael Ching.