About Me

I am a Computer Science student at the Freie Universität Berlin, currently beginning the second term of my Masters degree. I am further a student scientific assistant at the Fraunhofer AISEC, working on Quantum Algorithms for Cryptanalysis. I have a variety of interests in Computer Science and Mathematics. I also love History, Literature, Physics and Chemistry. Currently I am really keen on learning more about

Writing scientific papers (previously successfully did a dedicated course on it)
Graph Theory
Complexity Theory
Algorithmic Geometry (successfully did a dedicated course on it)
Quantum Computing and Quantum Mechanics

I am a member of the Internationale Arnim-Gesellschaft (IAG), a literary organization engaged in discovering the works by Achim von Arnim, one of the main representatives of the German Heidelberger "Junge" Romantik besides Clemens Brentano and Joseph von Eichendorff. He is known for his main work on German folk songs "Des Knaben Wunderhorn", his diverse tales and novels, as well as his expressive lyricism. Many rather unknown works of Arnim have not found the care and recognition they deserve yet, such as "Die Päpstin Johanna", "Ariel's Offenbarungen" and his dramas in the "Schaubühne" books. They are artifacts of a different time.

Publications

Christoph Graebnitz, V. Pickel, H. Eble, F. Morgner, H. Hattenbach, and M. Margraf, “An Extended Analysis of the Correlation Extraction Algorithm in the Context of Linear Cryptanalysis,” Quantum Reports, vol. 6, no. 4, pp. 714–734, Dec. 2024, doi: https://doi.org/10.3390/quantum6040043.

Posts

For every LaTeX-based article, I have also uploaded the associated code, which can be found on GitHub.

Presentations I gave on the complexity classes P [pdf], NP [pdf] and PSPACE [pdf] (05.01.2021)
- For the presentation slides and some supplementary material see the folder of the repository on https://www.github.com/valentinpi/valentinpi.github.io
Proof of the Stirling Formula (in German, 05.01.2021) [pdf]
On the Complexity of Complex Division (in German, 08.02.2021) [pdf]
Lecture Notes: Point Location using Hierarchical Decomposition (26.07.2021) [pdf]
On a small geometric puzzle I saw online (07.08.2021) [pdf]
Tutor-Presentation (in German, 21.09.2021) [pdf]
Bachelor-Thesis: A Comprehensive Description of the Quantum HHL Algorithm and its Application in the Cryptanalysis of the AES (21.03.2023) [pdf]
A Short Dive into Adiabatic Quantum Computation and Adiabatic Grover IN PROGRESS (05.04.2023) [pdf]
Notes and Handout for a Presentation I gave on Metrical Task Systems and the WFA Algorithm for Abstract Models on Online Computing (16.06.2023) [pdf] [pdf]
The Solovay-Kitaev Theorem (29.06.2023) [pdf]
Notes on the Quantum Algorithm for Finite Abelian HSPs (15.08.2023) [pdf]
Notes on the Quantum Zeno Effect and its Applications in Quantum Algorithms (29.08.2023) [pdf]
On the Search for Differential Characteristics (07.11.2023, updated 20.11.2023) [pdf]
The Gershgorin Circle Theorem in the Context of Adiabatic Quantum Computation (29.11.2023, updated from a talk on the 05.09.2023) [pdf]
Notes on Quantum Algorithms for the Finite HSP (06.01.2024, for a talk on the 09.01.2024) [pdf]
Notes, handout and presentation slides for a seminar talk I gave on convex analysis with the topic of subdifferenials and their situation in finite and real dimensions (25.04.2024, for a seminar with talk on the 25.07.2023) [pdf] [pdf] [pdf]

Achim von Arnim: Digitalisierte Dramen

Dramenliste (04.10.2024) [txt]
(UNFINISHED ~8%) Die Vertreibung der Spanier aus Wesel im Jahre 1629. Schauspiel in drei Handlungen (Digitale Niederschrift vom 25.12.2024-?) [txt]
Herr Hanrei und Maria vom langen Markte. Ein Pickelheringsspiel (Digitale Niederschrift vom 10.-11.10.2024) [txt]
Der wunderthätige Stein. Ein Hanswurstspiel (Digitale Niederschrift vom 15.09.2024) [txt]
(UNFINISHED ~0%) Jemand und Niemand. Ein Trauerspiel (Digitale Niederschrift vom 11.-?.10.2024) [txt]
(UNFINISHED ~1%) Der echte und der falsche Waldemar. (Digitale Niederschrift vom 19.09.2024-?) [txt]
(UNFINISHED ~16%) Der Stralauer Fischzug. Lustspiel (Digitale Niederschrift vom 10.10.2024-?) [txt]
(UNFINISHED ~11%) Margraf Carl Philipp von Brandenburg. Trauerspiel in drei Aufzügen. (Digitale Niederschrift vom 19.09.2024-?) [txt]

Ongoing Projects

Contact

Email: valenpi@gmx.de, OpenPGP key

GitHub: https://github.com/valentinpi

About This Page

After hearing about GitHub Pages, I decided to make a small page for some static sites on topics I am currently working with. By now, I have not written a lot, which presumably will not change in the near future.

Unfinished Projects

I do not get to update this page very often, so I added a timestamp of the last edit below or if I forget it you can look at the repository https://www.github.com/valentinpi/valentinpi.github.io.

This way of handling the web page is very bad, in some future I will use a more modern way.

Last update of this page: 19.09.2024