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AperiodicMonotilesLean. Lean formalization of aperiodic monotiles papers (staging repository for material not yet in mathlib)
16bsd-games. Inactive - GNU/Linux port of the NetBSD games collection - see https://www.polyomino.org.uk/computer/software/bsd-games/ for more information and links to newer versions
16IMOLean. Suggested conventions and examples for Lean formalization of IMO problem statements
15bmo2-2020-lean. Beginner experiments in formalisation of solutions to mathematical olympiad problems, using problems from the second round of the British Mathematical Olympiad 2019/20.
10IMOShortlist2024Lean. IMO Shortlist 2024 problem statements and some solutions in Lean
1mathlib. Lean mathematical components library
1prelink. Mirror of the Yocto Project prelink-cross project
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