[{"data":1,"prerenderedAt":4},["ShallowReactive",2],{"PVmisz0DEd":3},"# The Complex Number Game\n\nThe Complex Number Game. Make an interface for the complex numbers in Lean.\n\nThis is a Lean 4 port of the [Lean 3 complex number game](https://github.com/ImperialCollegeLondon/complex-number-game).\n\n# Installation\n\nThis assumes you have [installed Lean using the instructions at the leanprover-community website](https://leanprover-community.github.io/get_started.html).\n\nGet a copy of this project (for example with `git clone`). Then, in a terminal in the project directory, type\n\n```\nlake exe cache get\n```\n\nThis will download a compiled copy of Lean's mathematics library mathlib, which this project depends on (compiling it yourself would take a very long time).\n\nYou can open the project using the terminal with\n\n```\ncode .\n```\n\n(or you can use VS Code and then \"Open Folder\" -> `ComplexNumberGame`)\n\n# Playing the game\n\nThe general idea: we can assume anything about the real numbers, and have to build the complex numbers from the ground up.\nOnce the project is installed on your computer, see the [instructions](INSTRUCTIONS.md) for how to play it.\n\n# Thanks\n\n* Everyone on the Zulip chat at leanprover-community, for answering my\nquestions. You are now too many to mention.\n\n* Patrick Massot, and all the other people who have been involved in making\n  it possible for a mathematics undergraduate to install Lean without becoming\n  an expert in computer science.\n  \n* Kim Morrison, for explaining that I had missed an opportunity to teach `simp`\n  in the natural number game. My excuse: I didn't understand it at the time!\n  I hope you like this one better.\n",1791742520740]