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About a week ago, we participated in ZuriHac, the biggest Haskell Hackathon in the world, and want to tell you how it was.

About a week ago, we participated in [ZuriHac](https://zfoh.ch/zurihac2019/), the biggest [Haskell](https://www.haskell.org/) Hackathon in the world. During the event, we visited several talks, the most popular among which were those about GHC, and organized a Morley workshop together with the Tocqueville Group.

The participants of our workshop could use a special [web page](https://morley-zurihac.serokell.io/) to learn about Michelson and Morley as well as check the issues prepared for them. On Saturday and Sunday, all comers had a chance to discuss Michelson, ask questions, read tutorials, set up their working environments and try to solve our issues.

One of the participants, [Sébastien](https://besnier.se/), successfully implemented an [optimizer](https://hackage.haskell.org/package/morley-0.5.0/docs/Michelson-Optimizer.html). He presented his work during the project demos, and it was really impressive. It worked as expected on artificial examples, and it also optimized our DS protocol contract. After ZuriHac, we modified Sébastien’s work a bit and made a [merge request](https://gitlab.com/morley-framework/morley/merge_requests/2), which we’re going to review soon.

Many thanks to all the ZuriHac participants! We love the Haskell community and hope to see you all soon again.

Serokell at ZuriHac 2019

We are proud to be named among the Top IT outsourcing companies by SoftwareOutsourcing platform

Serokell recognized as top IT outsourcing company

Serokell has been included in the Top IT outsourcing companies by <a href="https://softwareoutsourcing.com/companies/it-outsourcing/">SoftwareOutsourcing.com</a>.


SoftwareOutsourcing is a leading platform that connects businesses and global service providers in mobile/web application development, IT infrastructure management, DevOps development, blockchain development, and more.


What sets SoftwareOutsourcing apart is its emphasis on quick communication, thorough research, and careful selection to showcase the best that the global IT industry has to offer. The platform provides comprehensive, unbiased, and up-to-date information about IT firms, including their services, pricing structures, and areas of expertise.


Serokell designs software for technology-intensive industries, including Fintech, Blockchain, Biotech, Oil & Gas, E-commerce, and others. Over the past five years, in addition to our expertise in functional programming, we have actively developed our machine learning department. Our company also contributes to open-source projects, creates training programs, participates in conferences, and regularly shares its expertise on <a href="https://serokell.io/blog">our blog</a>​.


We are proud that our quality software development services have earned us recognition from Software Outsourcing and promise to maintain and elevate high standards in our work.

Software Outsourcing Ranks Serokell  in the Top IT Outsourcing Companies

In the interview, Arseniy Seroka talks about Serokell's mission and the past and present of the company. He also shares his view on the software engineering future and reveals the main fields Serokell is working on these days.

Serokell CEO Arseniy Seroka Gave an Interview to Website Planet

> Serokell’s mission is to make great things happen. We aren’t afraid of challenges; we welcome them. And we work hard to improve at every step of the way, be it coding, recruitment, communication.

Our CEO Arseniy Seroka was recently interviewed by Website Planet, one of the leading content portals and review centres for those who want to build a new website or improve an existing one.

In the interview, Arseniy talks about the story of the company, its unique features, and the mission of Serokell. He points out that we all in the company work to make great things happen and improve with every step. Another significant mission of Serokell, says our CEO, is to support talented young scientists and give them the space and environment to work on outstanding projects.

To fulfil this mission, Serokell also acts as a sponsor of various contests and events. For example, our company supports the computer laboratory based at the ITMO university along with such companies as JetBrains, Yandex, Mail.ru Group, and Tinkoff.

Arseniy also shares his view on how he anticipates the future of software engineering. He believes that new stunning technologies will keep appearing, which means more talented people will use them to build products and services that change the world.

You can read the full interview on the [Website Planet](https://www.websiteplanet.com/blog/interview-serokell/).

Thank you, Website Planet, for the opportunity to spread the voice and share our values with your readers!

Website Planet Interviews Serokell CEO Arseniy Seroka

Read about the participation of our logician Danya Rogozin at LCFS 2020 and the thesis about which he gave his talk there.

##

On the 7th of January, Danya Rogozin participated in the conference Logical Foundation of Computer Science, Miami, Deerfield Beach. [LFCS](https://lfcs.ws.gc.cuny.edu/lfcs-2020/) is a logical and computer science conference, topics of which cover such areas as constructive mathematics, type theory, proof theory, foundations of mathematics, etc. 

![logical foundations of computer science](/files/0f/0f2k6r53.logo_general2.png " ")

Danya gave a talk on the results that he obtained in his thesis two years ago. The title is Modal Type Theory Based on the Intuitionistic Modal Logic ${\bf IEL}^{-}$. This logic [was introduced by Sergei Artemov and Tudor Protopopescu](https://arxiv.org/abs/1406.1582) to solve some issues related to constructive aspects of agent knowledge and belief.

## Considering modal logic from a computational perspective

This logic was considered from a computational perspective. It's a quite curious coincidence that axioms of this logic are pretty similar to the types of methods `pure` and `(<*>)` in the Applicative class well-known in Haskell. In this work, he considered the modal typed lambda calculus that is Curry-Howard isomorphic to the logic ${\bf IEL}^{-}$ and shown such metatheoretical properties as subject reduction, strong normalisation, and confluence.

To get a closer look, you may check out [the proceedings book](https://www.springer.com/gp/book/9783030367541), where the articles based on the speakers' talks are fully presented.

Also, if you want to read some of Danya's introductory work about modal logic, feel free to head to his [excellent post series](https://serokell.io/blog/incomplete-and-utter-introduction-to-modal-logic) on our blog. In it, he covers the basics of modal logic and explores its connections to fields such as computer science, topology, and foundations of mathematics.

Serokell at LCFS 2020

Viktor Kazanski

Denis Oleynikov

Pavel Golovin

Mika Logan

Constantine Ter-Matevosian

Alexey Danilevsky

Vladimir Serov

Nikolay Yakimov

Inna Logunova

Ivan Smetannikov

Aleksandr Pak

Leonid Vasilev

Ilya Lubimov

Andrey Borzenkov

Markus Barenhoff

Kirill Kizilov

Kristina Martin

Nurlan Alkuatov

Jay Zelenskyi

Adrián Enríquez

Anton Sorokin

Uliana Sushinskaia

Vadym Salnyk

Daniel Kazantsev

Vito Canadi

Chris Höppner

Lars Jellema

Yorick van Pelt

Yegor Timoshenko

George Agapov

Kirill Andreev

Brian Kean

Val Baturin

Kyrill Briantsev

John Burnham

Ivan Dolgakov

Kirill Elagin

Pavel Gliev

Joakim Goldkuhl

Ivan Gromakovsky

Kostya Ivanov

Murat Kasimov

Alexander Rukin

Vasiliy Kevroletin

Mikhail Kilianovski

Maxim Koltsov

Dmitry Kovanikov

Artem Kuznetsov

Nikita Lisitsa

Allan Lukwago

Dmitry Mukhutdinov

Alexander Nikolaev

Dmitry Nikulin

Konstantin Andriotis

Artem Ohanjanyan

Ilya Peresadin

Pasquale Pinto

Danya Rogozin

Rinat Stryungis

Alexander Tiunov

Paul Tsupikoff

Mitchell Vitez

Josef Vlach

Mikhail Volkhov

Murad Murzaev

Vladislav Zavialov

Arseniy Seroka

Jons Mostovojs

Felix Stegerman

Roman Melnikov

Jaroslav Shadrin

Marina Sharygina

Leonid Cupikov

Ping Chen

Sergey Litovchenko

Nadir Asanbekov

Dmitry Lifanov

test1

Domagoj Cerjan

Ellina Poponnikova

Dmitrii Susloparov

Damir Garifullin

Aleksandr Pakulev

Kirill Kuvshinov

Roman Alterman

Anton Dobrenkiy

Alexandra Voicehovska

Eduard Sachava

Sandeep Chandrika

Grigory Pevnev

Artem Velychko

Olga Bolgurtseva

Yulia Gavrilova

Zhenya Vinogradov

Alexander Bantyev

Stepan Prudnikov

Moremi Vannak

Fedor Fedorov

Krisztián Ádám

Alyona Antonova

Artem Yurchenko

Diogo Castro

Heitor Toledo Lassarote de Paula

Ilona Prikule

Natalya Kokova

Daria Smirnova

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Gints Dreimanis

Ivan Markov

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Dmitri Puzyrev