[isabelle] Proof Ground 2020 - Call for Problems



Dear Isabelle enthusiasts,

we are organizing another edition of the proving competition workshop
"Proof Ground", which will take place virtually just before IJCAR and the
Isabelle workshop.
Please notice our Call for Problems, and spread the word!

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Call for Problems
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Proof Ground 2020
Interactive Proving Contest
June 29, 2020
https://www21.in.tum.de/~wimmers/proofground/
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at IJCAR 2020
International Joint Conference on Automated Reasoning
June 29 - July 5, 2020,  (originally in) Paris, France, now fully virtual
https://ijcar2020.org/
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This workshop brings together researchers of the ITP community to compete
in a "proving contest".

While programming contests (e.g. ACM ICPC, International Olympiad in
Informatics) challenge large numbers of participants to solve
algorithmic problems within a short time, we envision proving contests
to entice proof engineers to formally prove small but interesting
problems from mathematics or computer science.

A contest system (https://competition.isabelle.systems/) is currently used
for teaching and hosting proving contests in Coq, Isabelle, and Lean.

Proof Ground 2020 is part of the Paris Nord Summer of LoVe 2020 (
https://lipn.univ-paris13.fr/summer-of-love-2020/), a joint event on LOgic
and VErification at Université Paris 13,
made of Petri Nets 2020, IJCAR 2020, FSCD 2020, and over 20 satellite
events.

As the main conferences of Paris Nord Summer of LoVe will happen as virtual
conferences due to the Covid-19 outbreak, Proof Ground will also take a
purely virtual format.

The first edition (https://www21.in.tum.de/~wimmers/proofground2019/) of
the workshop has been held at ITP 2019 (https://itp19.cecs.pdx.edu/).

Important Dates

- Submission deadline: June 1, 2020

- Workshop and Competition:  June 27, 2020

Call for Problems

   In order to conduct a stimulating contest we solicit interesting tasks.

   A contest typically lasts for two hours and consists of around five
   problems with varying difficulty.

   A problem:

   -   should contain an informal statement of the problem together with a
       template for the formal proof;

   -   should come with a reference solution (in any ITP);

   -   should be solvable (including formal proof) within 30 minutes;

   -   should be easy to state in any proof assistant, without requiring
       too much background library;

   -   could be from any part of mathematics, software verification, or
       your daily work with ITPs, and could also be a logic puzzle/riddle;

   -   could contain several subproblems which lead to partial points.

   Submissions from (potential) competition participants are allowed.

   Examples can be found at the current "Proving for Fun" contest system,
   e.g. here (https://competition.isabelle.systems/competitions/contest/6/).

   Submissions can be made via email to
   wimmers [at] in [dot] tum [dot] de by the date indicated above.

Organizers

   Maximilian P. L. Haslbeck
   Tobias Nipkow
   Simon Wimmer



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