md`
## Let's visualize stuff!
* Spending several hours on [Hai (Paul) Liu’s step-by-step Lambda Viewer](https://projectultimatum.org/cgi-bin/lambda)...
* I think our first goal to understand how just beta-reduce a binary tree, that contains 3 types of nodes:
+ \`Lam Variable Term\`
+ \`App Term Term\`
+ \`Variable = Var String \`
* And... what is ${tex`\beta`}-reduction?
## Let's don't visualise stuff!!?...
List of all possible reductions:
* alpha-equivalence
+ ...
* beta-reduction
+ something about proper replacing of variables, substitution one term into another.
* eta-reduction
+ ...
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