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followers: 80.0 following: 155.0 repos: 308.0 gists: 19.0

Name: Piotr Paradziński

Type: User

Bio: Apply formal methods, category theory, type theory to build: blockchains / compilers / big data in Scala / Haskell / Idris / Agda @ScalaConsultants

Twitter: pparadzinski

Location: Lublin

Blog: https://scalac.io/

Be the positive change you want to see in life ❤️

Open source contribution & experiements (nitpicking):

Blockchain technologies powered by formal methods: input-output-hk/scrypto, input-output-hk/mantis, ethereum-json-rpc-specification, input-output-hk/metronome
Agda:
- agda-smash formal specification for Haskell smash library in Agda
- formalverification/milewski-ctfp-pdf WIP translation to Agda of Category Theory for Programmers by Bartosz Milewski
- agda-hott Experiments with HoTT, category theory and FP in Agda
  - agda-hott/zio-prelude WIP formalization of zio-prelude in Agda
- agda-verified-fp-algorithms WIP translation of Software Foundations vol 3 : Verified Functional algorithms to Agda
- agda-stdlib
Haskell input-output-hk/contra-tracer, agda2rust, trifunctors, agda2scala, Haskell wiki, jespercockx/agda2scheme
Scala FP abstractions inspired by category theory
- Scalaz: day convolution, density commonad, laws for strong profunctor
- cats: laws for strong profunctor
- zio-prelude: Bicovariant, Zivariant, and more
- wiki about FP abstracions inspired by CT scala_typeclassopedia
- exploring differen encodings of category theroy Triglav, applied category theory: svarog
Scala FP libraries in ZIO ecosystem:
- zio,
- zio-dotty-quickstart.g8, zio-akka-quickstart.g8,
- zio-sql, zio-prelude, zio-json, zio/interop-cats, zio-gcp, zio-config
- Homotopy Type Theory in Agda - ProvingGround
Scala type level/deriving libraries: utilities based on magnolia: Lada
Idris Idris-Trifunctors, Idris-Applied-Category-Theory
Purescript: purescript-supermonad
Racket/Scheme: rackcheck, akeep/rough-draft
PLT: my collection of resources around Computational Trinitarianism, https://steshaw.org/plt/, yallop/effects-bibliography

Talks:

Why functional programming and category theory strongly matters, 2019, slides
Big picture of category theory in scala with deep dive into Contravariant and Profunctors, 2019, slides
Contravariant functors in scala, 2020, slides, exercises

Study gruops:

2023 - Agda - based on PLFA
2022 - HoTT/UF in Agda - based on Introduction to Univalent Foundations of Mathematics with Agda - Martín Escardó
2020-2021 - Aplied Category Theory - based on 7Sketches and Haskell functional pearls, schedule, attempts to encode in Idris

Piotr Paradziński's Projects

nix

Nix, the purely functional package manager

nominal

Haskell implementation of nominal datatypes and functions

nominal-scala

normalization-bench

Benchmarking various normalization algorithms for the lambda calculus

ob-mermaid

Generate mermaid diagrams within Emacs org-mode babel

open-games-hs

Haskell implementation of open games

parapet

A purely functional library to build distributed and event-driven systems

parsonsmatt.github.io

My Github pages website

peqnpapp

perun

perunek

pi-calculus

pi-dual

Collaborative work on reversible computing

pi-forall

A demo implementation of a simple dependently-typed language

pie-hs

An implementation of Pie in Haskell

plt

λΠ Programming Language Theory

postgresql-async

Async, Netty based, database drivers for PostgreSQL and MySQL written in Scala

profunctors

Haskell 98 Profunctors

promote-culture

Tools for fighting abuse on Twitter

propagators

The Art of the Propagator. See also:

propgen

provingground

Proving Ground: Tools for Automated Mathematics

publications_runtime_verification

Publications of Runtime Verification, Inc.

purescript-smash

An "extensible coeffect" system built out of comonads and Day convolution.

purescript-supermonad

PureScript SuperMonads and SuperApplicatives

quark

Quark: An Embedded DSL for Quasar Analytics

quasar

A compiler and columnar analytics engine for a SQL dialect with support for heterogeneous structured data

quasar-s3

Quasar connector providing support for Amazon S3 as a data source

rabbitmq-tutorials

Tutorials for using RabbitMQ in various ways

rackcheck

A property-based testing library for Racket.

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