BEGIN:VCALENDAR VERSION:2.0 PRODID:-//romshoo.github.io//DG Working Seminar Calendar//EN CALSCALE:GREGORIAN METHOD:PUBLISH X-WR-CALNAME:Waterloo Differential Geometry Working Seminar X-WR-TIMEZONE:America/Toronto BEGIN:VTIMEZONE TZID:America/Toronto X-LIC-LOCATION:America/Toronto BEGIN:STANDARD TZOFFSETFROM:-0400 TZOFFSETTO:-0500 TZNAME:EST DTSTART:19701101T020000 END:STANDARD BEGIN:DAYLIGHT TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:EDT DTSTART:19700308T020000 END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20250904T000000-OrganizationalMeeting-workingseminar@romshoo.github.io SUMMARY:Spiro Karigiannis — Organizational Meeting DESCRIPTION:Speaker: Spiro Karigiannis\nTitle: Organizational Meeting\n\nWe will plan the speakers for the rest of the semester. DTSTART;TZID=America/Toronto:20250904T143000 DTEND;TZID=America/Toronto:20250904T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20250908T000000-OrganizationalMeeting-workingseminar@romshoo.github.io SUMMARY:Spiro Karigiannis — Organizational Meeting DESCRIPTION:Speaker: Spiro Karigiannis\nTitle: Organizational Meeting\n\nWe will plan the speakers for the rest of the semester. DTSTART;TZID=America/Toronto:20250908T143000 DTEND;TZID=America/Toronto:20250908T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20250911T000000-Realizingtopologicaldatabyclosedalmostcomplexmanifolds- workingseminar@romshoo.github.io SUMMARY:Aleksandar Milivojevic — Realizing topological data by closed almos t complex manifolds DESCRIPTION:Speaker: Aleksandar Milivojevic\nTitle: Realizing topological d ata by closed almost complex manifolds\n\nI will talk about the topological obstructions to placing an almost complex structure on a smooth manifold. I will then discuss how the vanishing of these obstructions is in many case s sufficient to realize a given rational homotopy type (with a choice of co homology classes) by an almost complex manifold (with those cohomology clas ses as its rational Chern classes). DTSTART;TZID=America/Toronto:20250911T143000 DTEND;TZID=America/Toronto:20250911T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20250918T000000-CalibratedGeometryofaStronglyNondegenerateKnotSpace-wor kingseminar@romshoo.github.io SUMMARY:Alex Pawelko — Calibrated Geometry of a Strongly Nondegenerate Knot Space DESCRIPTION:Speaker: Alex Pawelko\nTitle: Calibrated Geometry of a Strongly Nondegenerate Knot Space\n\nWe will discuss a modification of Lee-Leung's work of the Kaehler structure on the knot space that allows one to define a n infinite-dimensional analogue of G2 manifolds\, then explore their calibr ated geometry. DTSTART;TZID=America/Toronto:20250918T143000 DTEND;TZID=America/Toronto:20250918T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20250925T000000-TheClutchingConstruction-workingseminar@romshoo.github. io SUMMARY:Jacques Van Wyk — The Clutching Construction DESCRIPTION:Speaker: Jacques Van Wyk\nTitle: The Clutching Construction\n\n The clutching construction is a technique in differential topology to const ruct fibre bundles over spheres. I will explain how the clutching construct ion works\, and how it can be used to define symplectic fibre bundles over spheres. DTSTART;TZID=America/Toronto:20250925T143000 DTEND;TZID=America/Toronto:20250925T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20251002T000000-ConstructingexamplesofSmithmaps-workingseminar@romshoo. github.io SUMMARY:Faisal Romshoo — Constructing examples of Smith maps DESCRIPTION:Speaker: Faisal Romshoo\nTitle: Constructing examples of Smith maps\n\nI will start off by giving some background on Smith maps\, which ar e special k-harmonic maps between two Riemannian manifolds. Smith maps have deep connections with both calibrated geometry and conformal geometry. I w ill then discuss my current work\, where I am trying to construct explicit examples of Smith immersions. DTSTART;TZID=America/Toronto:20251002T143000 DTEND;TZID=America/Toronto:20251002T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20251009T000000-Variousmodulispacesofmonopoles-workingseminar@romshoo.g ithub.io SUMMARY:Paul Cusson — Various moduli spaces of monopoles DESCRIPTION:Speaker: Paul Cusson\nTitle: Various moduli spaces of monopoles \n\nWe will go over\, in increasing generality\, results classifying variou s classes of Euclidean \(SU(n)\)-monopoles\, starting with the \(n=2\) case . We will see that these moduli spaces are described using spaces of ration al maps from the projective line to flag varieties. DTSTART;TZID=America/Toronto:20251009T143000 DTEND;TZID=America/Toronto:20251009T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20251023T000000-SliceKnotsandKnotConcordance-workingseminar@romshoo.git hub.io SUMMARY:Alexander Cole Teeter — Slice Knots and Knot Concordance DESCRIPTION:Speaker: Alexander Cole Teeter\nTitle: Slice Knots and Knot Con cordance\n\nIn this talk\, we explore an overview of the interplay between Knot Theory and Four Dimensional Topology. Specifically\, we look at both T opologically and Smoothly Slice Knots\, which are Knots in \(S^{3}\) that b ound (smoothly) embedded disks in \(B^{4}\). We explore some of the techniq ues in the proof that the conway knot is not smoothly slice\,and look at so me of the ideas involved the construction of exotic \(\mathbb{R}^{4}\)s usi ng such knots. DTSTART;TZID=America/Toronto:20251023T143000 DTEND;TZID=America/Toronto:20251023T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20251030T000000-StabilityandLyapunovFunctions-workingseminar@romshoo.gi thub.io SUMMARY:Amanda Petcu — Stability and Lyapunov Functions DESCRIPTION:Speaker: Amanda Petcu\nTitle: Stability and Lyapunov Functions\ n\nWhen working with a nonlinear system of differential equations\, finding explicit\, closed-form solutions can be difficult. A tool in such situatio ns is to determine the stability of the equilibrium points of the system. T his analysis allows us to predict the long-term behavior of the system by e xamining its trajectories and how they behave near an equilibrium point: sp ecifically\, do they remain bounded in some compact set\, converge to the p oint\, or escape to infinity? In this talk\, we will discuss Lyapunov's Dir ect Method\, a technique that allows us to determine the stability of an eq uilibrium point without explicitly solving the differential equations. DTSTART;TZID=America/Toronto:20251030T143000 DTEND;TZID=America/Toronto:20251030T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20251113T000000-Modulispacesofmonopolespart2-workingseminar@romshoo.git hub.io SUMMARY:Paul Cusson — Moduli spaces of monopoles part 2 DESCRIPTION:Speaker: Paul Cusson\nTitle: Moduli spaces of monopoles part 2\ n\nWe continue discussing Euclidean \(SU(n)\)-monopoles\, now in the case \ (n \geq 3\)\, and we aim to describe their moduli spaces using spaces of ra tional maps from the projective line to flag varieties. DTSTART;TZID=America/Toronto:20251113T143000 DTEND;TZID=America/Toronto:20251113T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20251120T000000-DimensionalReductionofS1InvariantInstantonsontheMultiTa ubNUT-workingseminar@romshoo.github.io SUMMARY:Facundo Camano — Dimensional Reduction of \(S^1\)-Invariant Instant ons on the Multi-Taub-NUT DESCRIPTION:Speaker: Facundo Camano\nTitle: Dimensional Reduction of \(S^1\ )-Invariant Instantons on the Multi-Taub-NUT\n\nIn this talk I will discuss the dimensional reduction of \(S^1\)-invariant instantons on the multi-Tau b-NUT space to singular monopolos on \(\mathbb{R}^3\). I will first introdu ce the multi-Taub-NUT space\, followed up by a discussion on \(S^1\)-equiva riant principal bundles. Next\, I will go over the natural decomposition of \(S^1\)-invariant connections into horizontal and vertical pieces\, and th en show how the self-duality equation reduces to the Bogomolny equation und er said decomposition. I will then show how the smoothness of the instanton over the NUT points determines the asymptotic conditions for the singular monopole. Finally\, I will go over the reverse construction: starting with a singular monopole on \(\mathbb{R}^3\) and building up to an \(S^1\)-invar iant instanton on the multi-Taub-NUT space. DTSTART;TZID=America/Toronto:20251120T143000 DTEND;TZID=America/Toronto:20251120T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20251127T000000-Correspondencebetweenlogarithmicconnectionsandframedpar abolicbundlesontheblowupofanodalRiemannsurface-workingseminar@romshoo.githu b.io SUMMARY:Kaleb Ruscitti — Correspondence between logarithmic connections and framed parabolic bundles on the blow up of a nodal Riemann surface DESCRIPTION:Speaker: Kaleb Ruscitti\nTitle: Correspondence between logarith mic connections and framed parabolic bundles on the blow up of a nodal Riem ann surface\n\nIn this seminar I will explain how a Mehta-Seshadri type cor respondence between logarithmic connections and parabolic vector bundles wo rks for a specific setting of interest. That is the blow up of the complex curve \(xy=t\) at the nodal point DTSTART;TZID=America/Toronto:20251127T143000 DTEND;TZID=America/Toronto:20251127T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20251204T000000-SchwarzLemmaforSmithmaps-workingseminar@romshoo.github. io SUMMARY:Spiro Karigiannis — Schwarz Lemma for Smith maps DESCRIPTION:Speaker: Spiro Karigiannis\nTitle: Schwarz Lemma for Smith maps \n\nI will discuss a generalized Schwarz Lemma for Smith maps\, proved rece ntly by Broder-Iliashenko-Madnick\, and explain how it generalizes the clas sical Schwarz Lemma from complex analysis. DTSTART;TZID=America/Toronto:20251204T143000 DTEND;TZID=America/Toronto:20251204T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20251211T000000-RiemannianGeometryofKnotSpaces-workingseminar@romshoo.g ithub.io SUMMARY:Alex Pawelko — Riemannian Geometry of Knot Spaces DESCRIPTION:Speaker: Alex Pawelko\nTitle: Riemannian Geometry of Knot Space s\n\nWe will review the construction of knot spaces of manifolds\, specific ally over \(G_2\) and \(\text{Spin}(7)\) manifolds. We will then see an exp licit construction of the Levi-Civita connection of the knot space\, and se e what this can tell us about the torsion of the induced special geometric structures on knot spaces of \(G_2\) and \(\text{Spin}(7)\) manifolds. DTSTART;TZID=America/Toronto:20251211T143000 DTEND;TZID=America/Toronto:20251211T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20260122T000000-ProperGroupActionsandtheSliceTheoreminFiniteDimensions- workingseminar@romshoo.github.io SUMMARY:Spencer Kelly — Proper Group Actions and the Slice Theorem in Finit e Dimensions DESCRIPTION:Speaker: Spencer Kelly\nTitle: Proper Group Actions and the Sli ce Theorem in Finite Dimensions\n\nIn this talk we will begin by reviewing important properties of group actions on manifolds\, and characteristics of proper actions. We then define isotropy and orbit types\, discuss the slic e theorem (on finite dimensional manifolds)\, and go over non-trivial examp les of slice bundles. This will set us up to conclude with the principal or bit theorem and the stratification of the orbit space. DTSTART;TZID=America/Toronto:20260122T143000 DTEND;TZID=America/Toronto:20260122T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20260129T000000-DiracOperatorsonOrbifoldResolutions-workingseminar@roms hoo.github.io SUMMARY:Viktor Majewski — Dirac Operators on Orbifold Resolutions DESCRIPTION:Speaker: Viktor Majewski\nTitle: Dirac Operators on Orbifold Re solutions\n\nIn this talk we discuss Dirac operators along degenerating fam ilies of Riemannian manifolds that converge\, in the Gromov-Hausdorff sense \, to a Riemannian orbifold. Such degenerations arise naturally when analys ing the boundary of Teichmüller spaces of special Riemannian metrics as wel l as moduli spaces appearing in gauge theory and calibrated geometry. Here sequences of smooth geometric structures on Riemannian manifolds may conver ge to an orbifold limit. To understand and control these degenerations\, we introduce smooth Gromov-Hausdorff resolutions of orbifolds\, that are\, sm ooth families \((X_t\,g_t)\)\, which collapse to the orbifold \((X_0\,g_0)\ ) as \(t\to 0\). The central analytic problem addressed in this paper is to understand the behaviour of Dirac operators along such resolutions\, in pa rticular in collapsing regimes where classical elliptic estimates fail. We develop a uniform Fredholm theory for the family of Dirac operators on the Gromov-Hausdorff resolution. Using weighted function spaces\, adiabatic ana lysis\, and a decomposition of \(X_t\) into asymptotically conical fibred ( ACF)\, conically fibred (CF) and conically fibred singular (CFS)\, we obtai n uniform realisations of the model operators and prove a linear gluing exa ct sequence relating global and local (co)kernels. As a consequence\, we co nstruct uniformly bounded right inverses for \(D_t\)\, and derive an index additivity formula. The theory developed here provides the analytic foundat ion for nonlinear gluing problems in gauge theory and special holonomy geom etry\, including torsion-free \(G\)-structures\, instantons\, and calibrate d submanifolds of Riemannian manifolds close to an orbifold limit. DTSTART;TZID=America/Toronto:20260129T143000 DTEND;TZID=America/Toronto:20260129T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20260212T000000-SpectralcurvesofEuclideanmathrmSUNmonopoles-workingsemi nar@romshoo.github.io SUMMARY:Paul Cusson — Spectral curves of Euclidean \(\mathrm{SU}(N)\)-monop oles DESCRIPTION:Speaker: Paul Cusson\nTitle: Spectral curves of Euclidean \(\ma thrm{SU}(N)\)-monopoles\n\nMonopoles over Euclidean \(\mathbb{R}^3\) with g auge group \(\mathrm{SU}(N)\)\, originally analytic objects\, can be studie d using the algebro-geometric properties of their spectral curves. We will discuss known results about these curves and how they depend on the asympto tics of the monopole's Higgs field. We will then go over some elementary re sults that restrict the possible degrees of the spectral curves when we imp ose symmetries on these monopoles from finite subgroups of \(\mathrm{SO}(3) \) DTSTART;TZID=America/Toronto:20260212T143000 DTEND;TZID=America/Toronto:20260212T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20260226T000000-Deformationsofcalibrations-workingseminar@romshoo.githu b.io SUMMARY:Faisal Romshoo — Deformations of calibrations DESCRIPTION:Speaker: Faisal Romshoo\nTitle: Deformations of calibrations\n\ nWe will look at a criterion for unobstructedness for calibrations and see when the corresponding moduli spaces form smooth manifolds\, following the approach by Goto in https://arxiv.org/abs/math/0112197 DTSTART;TZID=America/Toronto:20260226T143000 DTEND;TZID=America/Toronto:20260226T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20260305T000000-ModuliSpaceDegenerationviaMonopoleDeformation-workingse minar@romshoo.github.io SUMMARY:Facundo Camano — Moduli Space Degeneration via Monopole Deformation DESCRIPTION:Speaker: Facundo Camano\nTitle: Moduli Space Degeneration via M onopole Deformation\n\nIn this talk\, I will discuss the theory behind the deformation of monopoles. I will then apply the theory to show monopole mod uli spaces degenerate as a singularity is sent off towards infinity. DTSTART;TZID=America/Toronto:20260305T143000 DTEND;TZID=America/Toronto:20260305T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20260312T000000-Someresultsonhypersymplecticstructures-workingseminar@r omshoo.github.io SUMMARY:Amanda Petcu — Some results on hypersymplectic structures DESCRIPTION:Speaker: Amanda Petcu\nTitle: Some results on hypersymplectic s tructures\n\nA conjecture of Simon Donaldson is that on a compact \(4\)-man ifold \(X^4\) one can flow from a hypersymplectic structure to a hyperk\"ah ler structure while remaining in the same cohomology class. To this end the hypersymplectic flow was introduced by Fine-Yao. In this thesis the notion of a positive triple on \(X^4\) is used to define a hypersymplectic and hy perk\"ahler structure. Given a closed positive triple one can define either a closed \(G_2\) structure or a coclosed \(G_2\) structure on \(\mathbb{T} ^3 \times X^4\). The coclosed \(G_2\) structure is evolved under the \(G_2\ ) Laplacian coflow. This descends to a flow of the positive triple on \(X^4 \)\, which is again the Fine-Yao hypersymplectic flow. In the second part o f this thesis we let \(X^4 = \mathbb{R}^4 \setminus \{0\}\) with a particul ar cohomogeneity one action. A hypersymplectic structure invariant under th is action is introduced. The Riemann and Ricci curvature tensors are comput ed and we verify in a particular case that this hypersymplectic structure c an be transformed to a hyperkahler structure. The notion of a soliton for t he hypersymplectic flow in this particular case is introduced and it is fou nd that steady solitons give rise to hypersymplectic structures that can be transformed to hyperkahler structures. Some other soliton solutions are al so discussed. DTSTART;TZID=America/Toronto:20260312T143000 DTEND;TZID=America/Toronto:20260312T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20260319T000000-FillingHolesinthemathrmSpin7TeichmllerSpaceandStringCoh omology-workingseminar@romshoo.github.io SUMMARY:Viktor Majewski — Filling Holes in the \(\mathrm{Spin}(7)\)-Teichmü ller Space and String Cohomology DESCRIPTION:Speaker: Viktor Majewski\nTitle: Filling Holes in the \(\mathrm {Spin}(7)\)-Teichmüller Space and String Cohomology\n\nIn this talk\, I app ly the analytic results from the first talk to study the boundary of the \( \mathrm{Spin}(7)\) Teichmüller space. Using compactness results for Ricci-f lat metrics together with known examples of \(\mathrm{Spin}(7)\) manifolds\ , it is known that \(\mathrm{Spin}(7)\) orbifolds with \(\mathrm{SU}(n)\) i sotropy arise as boundary points of the moduli space. Building on the resol ution scheme for \(\mathrm{Spin}(7)\) orbifolds that I discussed in 2024\, and which I will briefly review\, we show how this boundary can be removed by requiring \(\mathrm{Spin}(7)\) orbifolds to encode information about the ir resolutions. In this way\, the Teichmüller space is enlarged to include orbifold limits together with their compatible resolutions\, thereby fillin g in the boundary. Finally\, we explain how this perspective is related to a \(\mathrm{Spin}(7)\) analogue of the crepant resolution conjecture from s tring cohomology\, providing a geometric interpretation of the obstruction complex discussed in the linear gluing analysis in the first talk. DTSTART;TZID=America/Toronto:20260319T143000 DTEND;TZID=America/Toronto:20260319T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20260326T000000-ConstructingaSliceTheoreminInfiniteDimensions-workingse minar@romshoo.github.io SUMMARY:Spencer Kelly — Constructing a Slice Theorem in Infinite Dimensions DESCRIPTION:Speaker: Spencer Kelly\nTitle: Constructing a Slice Theorem in Infinite Dimensions\n\nThe slice theorem is a powerful tool for understandi ng proper group actions on manifolds\; however it does not hold on infinite dimensional manifolds\, nor does there exist a general infinite dimensiona l extension of it. However\, on specific infinite dimensional manifolds\, w orking on a case-by-case basis\, we have been able to construct analogues o f the slice theorem. In this talk\, we will investigate one of these cases\ , namely the space of connections on a bundle over a compact Riemannian man ifold\, acted on by the gauge group. DTSTART;TZID=America/Toronto:20260326T143000 DTEND;TZID=America/Toronto:20260326T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20260402T000000-DeformationsofcalibrationsII-workingseminar@romshoo.git hub.io SUMMARY:Faisal Romshoo — Deformations of calibrations\, II DESCRIPTION:Speaker: Faisal Romshoo\nTitle: Deformations of calibrations\, II\n\nWe will continue where we left off last time\, completing the proof o f when the obstructions for the calibrations vanish. If time permits\, we w ill go through the proof of the fact that if an orbit is metrical\, ellipti c and topological\, then the corresponding moduli space is a smooth manifol d.  DTSTART;TZID=America/Toronto:20260402T143000 DTEND;TZID=America/Toronto:20260402T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20260416T000000-MorseTheoryviaHarmonicOscillators-workingseminar@romsho o.github.io SUMMARY:Alex Pawelko — Morse Theory via Harmonic Oscillators DESCRIPTION:Speaker: Alex Pawelko\nTitle: Morse Theory via Harmonic Oscilla tors\n\nWe will discuss the approach to Morse Theory originally due to Witt en\, where one constructs deformed Laplace operators whose low-energy eigen vectors concentrate near the critical points of one's Morse function\, and then uses Hodge theory to relate this to de Rham cohomology. DTSTART;TZID=America/Toronto:20260416T143000 DTEND;TZID=America/Toronto:20260416T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20260423T000000-TBD-workingseminar@romshoo.github.io SUMMARY:Paul Cusson — TBD DESCRIPTION:Speaker: Paul Cusson\nTitle: TBD\n\nTBD DTSTART;TZID=America/Toronto:20260423T143000 DTEND;TZID=America/Toronto:20260423T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT BEGIN:VEVENT DTSTAMP:20260411T220037Z UID:20260430T000000-TBD-workingseminar@romshoo.github.io SUMMARY:Facundo Camano — TBD DESCRIPTION:Speaker: Facundo Camano\nTitle: TBD\n\nTBD DTSTART;TZID=America/Toronto:20260430T143000 DTEND;TZID=America/Toronto:20260430T160000 LOCATION:MC 5403 URL;VALUE=URI:https://www.math.uwaterloo.ca/~fromshoo/assets/html/DG%20Webs ite/workingseminar_home.html END:VEVENT END:VCALENDAR