## University COVID-19 update

### Questions about buildings and services? Visit the list of Modified Services.

Please note: The University of Waterloo is closed for all events until further notice.

# Events

Wednesday, July 28, 2021 — 11:00 AM EDT

## Differential Geometry Working Seminar

Max Chemtov, Department of Pure Mathematics, University of Waterloo

"Subalgebras of so(7) Induced by the Coassociative 4-Form on R^7"

Consider the 2-forms on R^7 resulting from evaluating the coassociative 4-form on two vectors. It turns out that, when such vectors are restricted to an associative 3-plane P, these 2-forms along with those in Λ^2(P) give a subalgebra of so(7) isomorphic to so(3) ♁ so(3). After giving some brief context, we will discuss this fact and characterize the intersections of such subalgebras for different choices of P.

Wednesday, July 28, 2021 — 12:30 PM EDT

## Differential Geometry Working Seminar

Daren Cheng, Department of Pure Mathematics, University of Waterloo

"The second variation of area of minimal surfaces in four-manifolds (Part 2)"

Wednesday, July 28, 2021 — 3:00 PM EDT

## Analysis Student Seminar

Padraig Daly, Department of Pure Mathematics, University of Waterloo

"Quantum Superchannels"

Thursday, July 29, 2021 — 9:30 AM EDT

## PhD thesis defence

Ragini Singhal, Department of Pure Mathematics, University of Waterloo

"Deformation theory of nearly $\rm{G}_2$-structures and nearly $\rm{G}_2$ instantons"

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