logic.connectives
=================

Logical operations and connectives.

* [prop](prop.lean) : the type Prop
* [basic](basic.lean) : propositional connectives
* [eq](eq.lean) : equality and disequality
* [cast](cast.lean) : casts and heterogeneous equality
* [quantifiers](quantifiers.lean) : existential and universal quantifiers
* [if](if.lean) : if-then-else
* [instances](instances.lean) : type class instances