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Let f be a function. We are told that f^2 (f composed with itself) has a unique fixed point. How many fixed points could f have?

 

Here is the Lean 4 documentation, it's still under development

[–] [email protected] 2 points 3 years ago

What else does it offer for you?

[–] [email protected] 1 points 3 years ago

I really like this post, and people like Martijn are incredible

 

A worker-owned bicycle courier service. The software they use is open source, under an interesting licence that only allows use by co-operatives.

 

A video by Co-operatives UK on housing co-ops for students as an alternative to renting off landlords, who often treat their tenants pretty poorly

[–] [email protected] 2 points 4 years ago

Completely agree. I find a lot of lefties side with China just because they call themselves left and righties side with USA because they call themselves right. The truth of the matter is that both are directly responsible for extreme amounts of racism and corruption on every level.

 

Learn about the fantastic and beautiful community that has been created by a housing co-operative in the UK. This could be the future of housing for everyone, and this is something that is demonstrably possible today. Check out LILAC's website here: http://www.lilac.coop/

 

Talk by Benoît Molineaux. A really inspiring story of entrepreneurship and cooperation that has created a wonderful community from nothing.

 

A nice video by Co-operatives UK about what co-operatives actually are.