Ten minute Lean tutorial : make proofs of easy lemmas

[@pmcate2]

I was hoping this and your first video would be a tutorial for absolute beginners.

[@theevilcottonball]

Looks interesting, I never used a proof assistant...

[@kantamana1]

Why did i get error message "unknown identifier 'begin'" in VS code? Is it because i use Lean4?

[@xenaproject]

Yes. I put the ten minute tutorials on hold because we're porting Lean's maths library to Lean 4 and when that's done in a few months I'll do a bunch of Lean 4 tutorials

[@kantamana1]

@@xenaproject that is great!

[@perenoel657]

wow, so intuitive.
of course there is a function one_le_pow_of_one_le

[@gregolas597]

Jesus Christ I stumbled onto the part of TH-cam that reminds me how incredibly, incredibly retarded I am.

[@leo848]

?

[@shirsendutalukder4875]

I would use binomial theorem