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#AlgebraicGeometry

Latest posts tagged with #AlgebraicGeometry on Bluesky

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Posts tagged #AlgebraicGeometry

Bernd Siebert (UT Austin)
Bernd Siebert (UT Austin) Bernd Siebert (UT Austin)17 March 2023"Toward the logarithmic Hilbert scheme"Logarithmic geometry provides tools to work relative a normal crossings divisor,...

Bernd Siebert (UT Austin) speaking on "Toward the logarithmic Hilbert scheme" at our #AlgebraicGeometry #Math seminar back in March 2023. #MathSky

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Stefano Urbinati (Udine)
Stefano Urbinati (Udine) Stefano Urbinati (Udine)16 March 2023"Mori Dream Pairs and C^*-actions"The idea of the talk is that of giving a connection between "local" Mori theory and C*...

Stefano Urbinati (Udine) speaking on "Mori Dream Pairs and C^*-actions" at our #AlgebraicGeometry #Math seminar back in March 2023. #MathSky

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Tom Ducat (Durham)
Tom Ducat (Durham) Tom Ducat (Durham)9 March 2023"Quartic surfaces up to volume preserving equivalence"We consider log Calabi–Yau pairs of the form (P^3,D), where D is a quarti...

Tom Ducat (Durham) speaking on "Quartic surfaces up to volume preserving equivalence" at our #AlgebraicGeometry #Math seminar back in March 2023. #MathSky

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Ayush Kumar Tewari (Ghent)
Ayush Kumar Tewari (Ghent) Ayush Kumar Tewari (Ghent)2 March 2023"Forbidden patterns in tropical planar curves and panoptigons"Tropical curves in R^2 correspond to metric planar graphs...

Ayush Kumar Tewari (Ghent) speaking on "Forbidden patterns in tropical planar curves and panoptigons" at our #AlgebraicGeometry #Math seminar back in March 2023. #MathSky

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Fenglong You (ETH-Zurich)
Fenglong You (ETH-Zurich) Fenglong You (ETH-Zurich)22 February 2023"Relative quantum cohomology under birational transformations"I will talk about how relative quantum cohomology, def...

Fenglong You (ETH-Zurich) speaking on "Relative quantum cohomology under birational transformations" at our #AlgebraicGeometry #Math seminar back in February 2023. #MathSky

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Duc-Khanh Nguyen (Albany)
Duc-Khanh Nguyen (Albany) Duc-Khanh Nguyen (Albany)16 February 2023"A generalization of the Murnaghan-Nakayama rule for K-k-Schur and k-Schur functions"We introduce a generalization o...

Duc-Khanh Nguyen (Albany) speaking on "A generalization of the Murnaghan-Nakayama rule for K-k-Schur and k-Schur functions" at our #AlgebraicGeometry #Math seminar back in February 2023. #MathSky

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Preview
arXiv papers for Gianni Petrella

Check out Gianni's work on the arXiv. #QuiverModuli #AlgebraicGeometry #RepresentationTheory
arxiv.org/search/?quer...

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Iacopo Brivio (NCTS)
Iacopo Brivio (NCTS) Iacopo Brivio (NCTS)9 February 2023"Invariance of plurigenera and KSBA moduli in positive and mixed characteristic"A famous theorem by Siu states that plurig...

Iacopo Brivio (NCTS) speaking on "Invariance of plurigenera and KSBA moduli in positive and mixed characteristic" at our #AlgebraicGeometry #Math seminar back in February 2023. #MathSky

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Yaoxiong Wen (KIAS)
Yaoxiong Wen (KIAS) Yaoxiong Wen (KIAS)2 February 2023"Mirror symmetry for the parabolic G-Higgs bundle, from local to global"Motivated by geometric Langlands, we initiate a pro...

Yaoxiong Wen (KIAS) speaking on "Mirror symmetry for the parabolic G-Higgs bundle, from local to global" at our #AlgebraicGeometry #Math seminar back in February 2023. #MathSky

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Tiago Duarte Guerreiro (Essex)
Tiago Duarte Guerreiro (Essex) Tiago Duarte Guerreiro (Essex)8 December 2022"On toric Sarkisov Links from P^4"According to the Sarkisov Program, a birational map between a Fano variety of ...

Tiago Duarte Guerreiro (Essex) speaking on "On toric Sarkisov Links from P^4" at our #AlgebraicGeometry #Math seminar back in December 2022. #MathSky

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Rob Silversmith (Warwick)
Rob Silversmith (Warwick) Rob Silversmith (Warwick)28 November 2022"Cross-ratios and perfect matchings"Given a bipartite graph G (subject to a constraint), the "cross-ratio degree" of...

Rob Silversmith (Warwick) speaking on "Cross-ratios and perfect matchings" at our #AlgebraicGeometry #Math seminar back in November 2022. #MathSky

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Vasiliki Petrotou (Hebrew University of Jerusalem)
Vasiliki Petrotou (Hebrew University of Jerusalem) Vasiliki Petrotou (Hebrew University of Jerusalem)17 November 2022"Tom & Jerry triples and the 4-intersection unprojection formats"Unprojection is a theory i...

Vasiliki Petrotou (Hebrew University of Jerusalem) speaking on "Tom & Jerry triples and the 4-intersection unprojection formats" at our #AlgebraicGeometry #Math seminar back in November 2022. #MathSky

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Joey Palmer (Illinois)
Joey Palmer (Illinois) Joey Palmer (Illinois)10 November 2022"Integrable systems with S^1-actions and the associated polygons"Semitoric systems are a type of four-dimensional integ...

Joey Palmer (Illinois) speaking on "Integrable systems with S^1-actions and the associated polygons" at our #AlgebraicGeometry #Math seminar back in November 2022. #MathSky

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Julia Schneider (EPFL)
Julia Schneider (EPFL) Julia Schneider (EPFL)3 November 2022"Birational maps of Severi-Brauer surfaces, with applications to Cremona groups of higher rank"Cremona groups are groups...

Julia Schneider (EPFL) speaking on "Birational maps of Severi-Brauer surfaces, with applications to Cremona groups of higher rank" at our #AlgebraicGeometry #Math seminar back in November 2022. #MathSky

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Alex Abreu (Fluminense Federal University)
Alex Abreu (Fluminense Federal University) Alex Abreu (Fluminense Federal University)20 October 2022"Wall-crossing of Brill-Noether cycles in compactified Jacobians"We will discuss an explicit graph f...

Alex Abreu (Fluminense Federal University) speaking on "Wall-crossing of Brill-Noether cycles in compactified Jacobians" at our #AlgebraicGeometry #Math seminar back in October 2022. #MathSky

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Luca Ugaglia (Palermo)
Luca Ugaglia (Palermo) Luca Ugaglia (Palermo)13 October 2022"Seshadri constants of toric surfaces"In this talk, after introducing Seshadri constants of projective surfaces and some...

Luca Ugaglia (Palermo) speaking on "Seshadri constants of toric surfaces" at our #AlgebraicGeometry #Math seminar back in October 2022. #MathSky

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Aimeric Malter (Birmingham)
Aimeric Malter (Birmingham) Aimeric Malter (Birmingham)6 October 2022"A derived equivalence of the Libgober-Teitelbaum and Batyrev-Borisov mirror constructions"In this talk I will demon...

Aimeric Malter (Birmingham) speaking on "A derived equivalence of the Libgober-Teitelbaum and Batyrev-Borisov mirror constructions" at our #AlgebraicGeometry #Math seminar back in October 2022. #MathSky

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Luca Tasin (Milano)
Luca Tasin (Milano) Luca Tasin (Milano)29 September 2022"Sasaki-Einstein metrics on spheres"It is a classical problem in geometry to construct new metrics on spheres. I will rep...

Luca Tasin (Milano) speaking on "Sasaki-Einstein metrics on spheres" at our #AlgebraicGeometry #Math seminar back in September 2022. #MathSky

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Gianluca Occhetta (Trento)
Gianluca Occhetta (Trento) Gianluca Occhetta (Trento)22 September 2022"Maximal disjoint Schubert cycles in rational homogeneous spaces"In 1974 Tango proved that there are no non-consta...

Gianluca Occhetta (Trento) speaking on "Maximal disjoint Schubert cycles in Rational Homogeneous spaces" at our #AlgebraicGeometry #Math seminar back in September 2022. #MathSky

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Nathan Reading (North Carolina)
Nathan Reading (North Carolina) Nathan Reading (North Carolina)15 September 2022"Scatter, cluster, scatter, model"Cluster algebras were invented/discovered in order to understand total posi...

Nathan Reading (North Carolina) speaking on "Scatter, cluster, scatter, model" at our #AlgebraicGeometry #Math seminar back in September 2022. #MathSky

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Alfredo Nájera Chávez (UNAM)
Alfredo Nájera Chávez (UNAM) Alfredo Nájera Chávez (UNAM)1 September 2022"Newton–Okounkov bodies and minimal models of cluster varieties"I will explain a general procedure to construct N...

Alfredo Nájera Chávez (UNAM) speaking on "Newton–Okounkov bodies and minimal models of cluster varieties" at our #AlgebraicGeometry #Math seminar back in September 2022. #MathSky

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Tristan Hübsch (Howard)
Tristan Hübsch (Howard) Tristan Hübsch (Howard)25 August 2022"Laurent Smoothing, Turin Degenerations and Mirror Symmetry"Calabi–Yau hypersurfaces in toric spaces of general type (en...

Tristan Hübsch (Howard) speaking on "Laurent Smoothing, Turin Degenerations and Mirror Symmetry" at our #AlgebraicGeometry #Math seminar back in August 2022. #MathSky

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Felipe Espreafico (IMPA)
Felipe Espreafico (IMPA) Felipe Espreafico (IMPA)11 August 2022"Gauss–Manin Connection in Disguise and Mirror Symmetry"In this talk, we aim to explain what the Gauss–Manin Connection...

Felipe Espreafico (IMPA) speaking on "Gauss–Manin Connection in Disguise and Mirror Symmetry" at our #AlgebraicGeometry #Math seminar back in August 2022. #MathSky

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Are there more people from algebraic geometry, commutative algebra, etc. on mastodon? Somehow I'm mostly following type theory people (which I'm also interested in, even though I'm even more of an amateur in type theory than in AG 😅)

#AlgebraicGeometry #CommutativeAlgebra

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Swarnava Mukhopadhyay (Tata Institute)
Swarnava Mukhopadhyay (Tata Institute) Swarnava Mukhopadhyay (Tata Institute)4 August 2022"Graph potentials and mirrors of moduli of rank two bundles on curves"Graph potentials are Laurent polynom...

Swarnava Mukhopadhyay (Tata Institute) speaking on "Graph potentials and mirrors of moduli of rank two bundles on curves" at our #AlgebraicGeometry #Math seminar back in August 2022. #MathSky

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Luca Schaffler (Roma Tre University)
Luca Schaffler (Roma Tre University) Luca Schaffler (Roma Tre University)28 July 2022"Boundary divisors in the compactification by stable surfaces of moduli of Horikawa surfaces"Smooth minimal s...

Luca Schaffler (Roma Tre University) speaking on "Boundary divisors in the compactification by stable surfaces of moduli of Horikawa surfaces" at our #AlgebraicGeometry #Math seminar back in July 2022. #MathSky

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Pierrick Bousseau (ETH Zürich)
Pierrick Bousseau (ETH Zürich) Pierrick Bousseau (ETH Zürich)21 July 2022"Fock–Goncharov dual cluster varieties and Gross–Siebert mirrors"Cluster varieties come in pairs: for any X-cluster...

Pierrick Bousseau (ETH Zürich) speaking on "Fock–Goncharov dual cluster varieties and Gross–Siebert mirrors" at our #AlgebraicGeometry #Math seminar back in July 2022. #MathSky

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Léonard Pille-Schneider (Paris)
Léonard Pille-Schneider (Paris) Léonard Pille-Schneider (Paris)14 July 2022"Degenerations of Calabi–Yau manifolds and integral affine geometry"Let X \rightarrow D^* be a maximal degeneratio...

Léonard Pille-Schneider (Paris) speaking on "Degenerations of Calabi–Yau manifolds and integral affine geometry" at our #AlgebraicGeometry #Math seminar back in July 2022. #MathSky

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Chen Jiang (SCMS)
Chen Jiang (SCMS) Chen Jiang (SCMS)8 July 2022"Explicit boundedness of canonical Fano 3-folds"Motivated by the classification of canonical Fano 3-folds, we are interested in b...

Chen Jiang (SCMS) speaking on "Explicit boundedness of canonical Fano 3-folds" at our #AlgebraicGeometry #Math seminar back in July 2022. #MathSky

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Preview
Positive Polytopes with Few Facets in the Grassmannian In this article we study adjoint hypersurfaces of geometric objects obtained by intersecting simple polytopes with few facets in P^5 with the Grassmannian Gr(2,4). These generalize the positive Grassmannian, which is the intersection of Gr(2,4) with the simplex. We show that if the resulting object has five facets, it is a positive geometry and the adjoint hypersurface is unique. For the case of six facets we show that the adjoint hypersurface is not necessarily unique and give an upper bound on the dimension of the family of adjoints. We illustrate our results with a range of examples. In particular, we show that even if the adjoint is not unique, a positive hexahedron can still be a positive geometry.

"Positive Polytopes with Few Facets in the Grassmannian" by Dmitrii Pavlova and Kristian Ranestad. #ExperimentalMath #AlgebraicGeometry #Polytopes

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