An afternoon of algebraic geometry in memory of Roberto Bedregal

Abstract: we convene for a special edition of the BRAG (Brazilian Algebraic Geometry Seminar) session in honor of our friend and colleague Roberto Callejas-Bedregal, who passed away on 6 April of this year. We will have 15 minute lectures given by Abramo Hefez (UFF), Steven Kleiman (MIT), Michelle Morgado (Unesp), Marcelo José Saia (UFSCar), José Seade (UNAM) and Otoniel Nogueira da Silva (UNAM), along with testimonials from Roberto's students, friends and colleagues.

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1 - Abramo Hefez: The mathematical trajectory of Roberto Bedregal Abstract: The aim of this short talk is to sketch Bedregal's journey towards his mathematical achievements.

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2 - Steve Kleiman: Roberto's MIT Thesis To begin, some introductory remarks are made about how Roberto came to study at MIT and to develop the first purely algebraic treatment of the Whitney Conditions. Then the main result of his thesis is stated, and its terms, explained. Finally, an inkling is given of the import of the Whitney Conditions.

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3 - José Seade: Chern classes for singular varieties. I will speak about some of the joint work I did recently with Roberto Callejas-Bedregal and Michelle Morgado, about Chern classes of singular varieties.

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4 - Michelle Morgado: Lê cycles

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5 - Marcelo José Saia: On Segre numbers of homogeneous map germs

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6 - Otoniel Nogueira da Silva: Equisingularity of families of map germs and Ruas's Conjecture

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7 - Presentation of a video made by Roberto's students.

algebraic geometry

Audience: researchers in the topic

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Brazilian algebraic geometry seminar

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Previous talks available at the YouTube channel "Brazilian Algebraic Geometry" www.youtube.com/channel/UCM-pcdNdpWxQFgOg-illE2w

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