About me
I am a fourth year PhD student at the University of Antwerp and SISSA, under the supervision of Wendy Lowen and Nicolò Sibilla.
Earlier got my Master's in Sapienza University in Rome, where I did my thesis under Marco Manetti. Here is my CV.
Contact
- Alessandro Lehmann (he/him)
- University of Antwerp, Department of Mathematics
Middelheimlaan 1, 2020
Antwerp, Belgium
alessandro.lehmann at uantwerpen dot be
- SISSA (International School for Advanced Studies)
Via Bonomea 265, 34136
Trieste, Italy
alehmann at sissa dot it
Research
My main research area is (homological) algebra, with connections to deformation theory and noncommutative algebraic geometry.
More specifically, I am currently working on developing a deformation theory for (enhanced) triangulated categories with the goal of understanding the relation between deformations of a dg-algebra and deformations of its derived category. If you are interested in the topic, here are the slides from a presentation
I did in Antwerp introducing the problem in general terms and here is a poster that explains my recent research in more detail.
Writing
A. Lehmann, Hochschild cohomology parametrizes curved Morita deformations. To appear in Proc. Am. Math. Soc.
A. Lehmann, W. Lowen, Filtered derived categories of curved deformations. Preprint.
Miscellanea
Random writing
My master's thesis on enhancements of triangulated categories. I hope it can be useful as a reference for the basics or as a
light introduction to some of the less elementary aspects of dg-categories. There are surely many imprecisions, ramblings and typos.
People
My research group in Antwerp: Violeta Borges Marques, Lander Hermans, Arne Mertens, Julie Symons, ...
Fish
The fish in the background is a betta splendens.
2023-2024
Hilbert and Fourier
I was teaching assistant for the course Hilbert spaces and Fourier series at the University of Antwerp, taught by Wim Vanroose. Link
2022-2023
Algebraic Topology
I was teaching assistant for the course Algebraic Topology at the University of Antwerp, taught by Jens Hemelaer. Link
2020-2021
Calcolo I
I was teaching assistant for the course Calculus I at Sapienza University, taught by Luigi Orsina.
Algebraic Topology
Here are some exercise sessions that I prepared for the course.
Session 1
Session 2
Session 3
Session 4
Session 5
Session 6
Session 7
Session 8
Session 9
Session 10
Hilbert and Fourier
Here are some exercise sessions that I prepared for the course.
Session 2
Session 3
Sessions 4 and 5
Elements
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. Finally, this is a link.
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Fringilla nisl. Donec accumsan interdum nisi, quis tincidunt felis sagittis eget tempus euismod. Vestibulum ante ipsum primis in faucibus vestibulum. Blandit adipiscing eu felis iaculis volutpat ac adipiscing accumsan faucibus. Vestibulum ante ipsum primis in faucibus lorem ipsum dolor sit amet nullam adipiscing eu felis.
Preformatted
i = 0;
while (!deck.isInOrder()) {
print 'Iteration ' + i;
deck.shuffle();
i++;
}
print 'It took ' + i + ' iterations to sort the deck.';
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- Dolor pulvinar etiam.
- Etiam vel felis viverra.
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- Felis enim et feugiat.
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29.99 |
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19.99 |
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29.99 |
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Vitae integer tempus condimentum. |
19.99 |
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29.99 |
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Name |
Description |
Price |
Item One |
Ante turpis integer aliquet porttitor. |
29.99 |
Item Two |
Vis ac commodo adipiscing arcu aliquet. |
19.99 |
Item Three |
Morbi faucibus arcu accumsan lorem. |
29.99 |
Item Four |
Vitae integer tempus condimentum. |
19.99 |
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Ante turpis integer aliquet porttitor. |
29.99 |
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100.00 |